diff --git a/nodemon.json b/nodemon.json
index 00313fe368..e76cdba1a4 100644
--- a/nodemon.json
+++ b/nodemon.json
@@ -4,5 +4,6 @@
     "config",
     "src/index.html"
   ],
-  "ext": "js ts json html"
+  "ext": "js ts json html",
+  "delay": "500"
 }
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.component.ts b/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
index 90d3b50786..be26075d25 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
@@ -28,14 +28,13 @@ export class SearchFilterComponent implements OnInit {
   }
 
   ngOnInit() {
-    const sub = this.filterService.isFilterActive(this.filter.paramName).first().subscribe((isActive) => {
+    this.filterService.isFilterActive(this.filter.paramName).first().subscribe((isActive) => {
       if (this.filter.isOpenByDefault || isActive) {
         this.initialExpand();
       } else {
         this.initialCollapse();
       }
     });
-    sub.unsubscribe();
   }
 
   toggle() {
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.service.ts b/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
index 62f906c004..cbe6d79dfc 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
@@ -1,4 +1,5 @@
 import { Injectable } from '@angular/core';
+import { debounceTime, distinctUntilChanged, map } from 'rxjs/operators';
 import { SearchFiltersState, SearchFilterState } from './search-filter.reducer';
 import { createSelector, MemoizedSelector, Store } from '@ngrx/store';
 import { Observable } from 'rxjs/Observable';
@@ -79,20 +80,21 @@ export class SearchFilterService {
       this.getCurrentView(),
       this.getCurrentScope(),
       this.getCurrentQuery(),
-      this.getCurrentFilters(),
-      (pagination, sort, view, scope, query, filters) => {
-        return Object.assign(new PaginatedSearchOptions(),
-          defaults,
-          {
-            pagination: pagination,
-            sort: sort,
-            view: view,
-            scope: scope || defaults.scope,
-            query: query,
-            filters: filters
-          })
-      }
-    )
+      this.getCurrentFilters()).pipe(
+        distinctUntilChanged((a, b) => JSON.stringify(a) === JSON.stringify(b)),
+        map(([pagination, sort, view, scope, query, filters]) => {
+            return Object.assign(new PaginatedSearchOptions(),
+              defaults,
+              {
+                pagination: pagination,
+                sort: sort,
+                view: view,
+                scope: scope || defaults.scope,
+                query: query,
+                filters: filters
+              })
+        })
+      )
   }
 
  getSearchOptions(defaults: any = {}): Observable<SearchOptions> {
diff --git a/src/app/+search-page/search-filters/search-filters.component.ts b/src/app/+search-page/search-filters/search-filters.component.ts
index 517b2e1e59..cb2dae0290 100644
--- a/src/app/+search-page/search-filters/search-filters.component.ts
+++ b/src/app/+search-page/search-filters/search-filters.component.ts
@@ -23,6 +23,8 @@ export class SearchFiltersComponent {
   constructor(private searchService: SearchService, private filterService: SearchFilterService) {
     this.filters = searchService.getConfig();
     this.clearParams = filterService.getCurrentFilters().map((filters) => {Object.keys(filters).forEach((f) => filters[f] = null); return filters;});
+
+    this.filters.subscribe((v) => console.log('this.filters', v));
   }
 
   getSearchLink() {
diff --git a/src/app/+search-page/search-page.component.html b/src/app/+search-page/search-page.component.html
index d53e4776b1..d911a4cb9b 100644
--- a/src/app/+search-page/search-page.component.html
+++ b/src/app/+search-page/search-page.component.html
@@ -7,7 +7,7 @@
         <ds-search-form id="search-form"
                         [query]="(searchOptions$ | async)?.query"
                         [scope]="(searchOptions$ | async)?.scope"
-                        [currentParams]="currentParams"
+                        [currentUrl]="service.getSearchLink()"
                         [scopes]="(scopeListRD$ | async)?.payload?.page">
         </ds-search-form>
       <div class="row">
@@ -36,4 +36,4 @@
       </div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/src/app/+search-page/search-page.component.spec.ts b/src/app/+search-page/search-page.component.spec.ts
index cc53e18871..c51547a53d 100644
--- a/src/app/+search-page/search-page.component.spec.ts
+++ b/src/app/+search-page/search-page.component.spec.ts
@@ -38,7 +38,8 @@ describe('SearchPageComponent', () => {
   const sort: SortOptions = new SortOptions();
   const mockResults = Observable.of(['test', 'data']);
   const searchServiceStub = jasmine.createSpyObj('SearchService', {
-    search: mockResults
+    search: mockResults,
+    getSearchLink: '/search'
   });
   const queryParam = 'test query';
   const scopeParam = '7669c72a-3f2a-451f-a3b9-9210e7a4c02f';
diff --git a/src/app/+search-page/search-page.component.ts b/src/app/+search-page/search-page.component.ts
index c9efc65676..6b2d9b95eb 100644
--- a/src/app/+search-page/search-page.component.ts
+++ b/src/app/+search-page/search-page.component.ts
@@ -31,7 +31,6 @@ import { SearchSidebarService } from './search-sidebar/search-sidebar.service';
 export class SearchPageComponent implements OnInit {
 
   resultsRD$: Observable<RemoteData<PaginatedList<SearchResult<DSpaceObject>>>>;
-  currentParams = {};
   searchOptions$: Observable<PaginatedSearchOptions>;
   sortConfig: SortOptions;
   scopeListRD$: Observable<RemoteData<PaginatedList<Community>>>;
diff --git a/src/app/+search-page/search-page.module.ts b/src/app/+search-page/search-page.module.ts
index 7c2001c909..1468fe532e 100644
--- a/src/app/+search-page/search-page.module.ts
+++ b/src/app/+search-page/search-page.module.ts
@@ -1,5 +1,6 @@
 import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { CoreModule } from '../core/core.module';
 import { SharedModule } from '../shared/shared.module';
 import { SearchPageRoutingModule } from './search-page-routing.module';
 import { SearchPageComponent } from './search-page.component';
@@ -31,6 +32,7 @@ const effects = [
     CommonModule,
     SharedModule,
     EffectsModule.forFeature(effects),
+    CoreModule.forRoot()
   ],
   declarations: [
     SearchPageComponent,
diff --git a/src/app/+search-page/search-results/search-results.component.html b/src/app/+search-page/search-results/search-results.component.html
index ec103e8957..ed6fc18d9c 100644
--- a/src/app/+search-page/search-results/search-results.component.html
+++ b/src/app/+search-page/search-results/search-results.component.html
@@ -1,5 +1,5 @@
 <h2>{{ 'search.results.head' | translate }}</h2>
-<div *ngIf="searchResults?.hasSucceeded && !searchResults?.isLoading" @fadeIn>
+<div *ngIf="searchResults?.hasSucceeded && !searchResults?.isLoading && searchResults?.payload?.page.length > 0" @fadeIn>
 <ds-viewable-collection
   [config]="searchConfig.pagination"
   [sortConfig]="searchConfig.sort"
@@ -8,4 +8,4 @@
 </ds-viewable-collection></div>
 <ds-loading *ngIf="!searchResults || searchResults?.isLoading" message="{{'loading.search-results' | translate}}"></ds-loading>
 <ds-error *ngIf="searchResults?.hasFailed" message="{{'error.search-results' | translate}}"></ds-error>
-<ds-error *ngIf="searchResults?.payload?.page.length == 0" message="{{'search.results.no-results' | translate}}"></ds-error>
\ No newline at end of file
+<ds-error *ngIf="searchResults?.payload?.page.length == 0" message="{{'search.results.no-results' | translate}}"></ds-error>
diff --git a/src/app/+search-page/search-service/search.service.ts b/src/app/+search-page/search-service/search.service.ts
index 25b8c0b23e..07546c062c 100644
--- a/src/app/+search-page/search-service/search.service.ts
+++ b/src/app/+search-page/search-service/search.service.ts
@@ -167,7 +167,8 @@ export class SearchService implements OnDestroy {
     // get search results from response cache
     const facetConfigObs: Observable<SearchFilterConfig[]> = responseCacheObs.pipe(
       map((entry: ResponseCacheEntry) => entry.response),
-      map((response: FacetConfigSuccessResponse) => response.results)
+      map((response: FacetConfigSuccessResponse) =>
+        response.results.map((result: any) => Object.assign(new SearchFilterConfig(), result)))
     );
 
     return this.rdb.toRemoteDataObservable(requestEntryObs, responseCacheObs, facetConfigObs);
diff --git a/src/app/+search-page/search-settings/search-settings.component.ts b/src/app/+search-page/search-settings/search-settings.component.ts
index cc22da7176..145b58e27b 100644
--- a/src/app/+search-page/search-settings/search-settings.component.ts
+++ b/src/app/+search-page/search-settings/search-settings.component.ts
@@ -22,8 +22,6 @@ export class SearchSettingsComponent implements OnInit {
    */
   public pageSize;
   @Input() public pageSizeOptions;
-  public listPageSizeOptions: number[] = [5, 10, 20, 40, 60, 80, 100];
-  public gridPageSizeOptions: number[] = [12, 24, 36, 48 , 50, 62, 74, 84];
 
   private sub;
   private scope: string;
@@ -51,9 +49,9 @@ export class SearchSettingsComponent implements OnInit {
         this.pageSize = +params.pageSize || this.searchOptions.pagination.pageSize;
         this.direction = params.sortDirection || this.searchOptions.sort.direction;
         if (params.view === ViewMode.Grid) {
-          this.pageSizeOptions = this.gridPageSizeOptions;
+          this.pageSizeOptions = this.pageSizeOptions;
         } else {
-          this.pageSizeOptions = this.listPageSizeOptions;
+          this.pageSizeOptions = this.pageSizeOptions;
         }
       });
   }
diff --git a/src/app/shared/host-window.service.ts b/src/app/shared/host-window.service.ts
index 6fa5a6b32b..13ecbe7538 100644
--- a/src/app/shared/host-window.service.ts
+++ b/src/app/shared/host-window.service.ts
@@ -1,3 +1,4 @@
+import { distinctUntilChanged, map } from 'rxjs/operators';
 import { HostWindowState } from './host-window.reducer';
 import { Injectable } from '@angular/core';
 import { createSelector, Store } from '@ngrx/store';
@@ -8,11 +9,18 @@ import { AppState } from '../app.reducer';
 
 // TODO: ideally we should get these from sass somehow
 export enum GridBreakpoint {
-  XS = 0,
-  SM = 576,
-  MD = 768,
-  LG = 992,
-  XL = 1200
+  SM_MIN = 576,
+  MD_MIN = 768,
+  LG_MIN = 992,
+  XL_MIN = 1200
+}
+
+export enum WidthCategory {
+  XS,
+  SM,
+  MD,
+  LG,
+  XL
 }
 
 const hostWindowStateSelector = (state: AppState) => state.hostWindow;
@@ -31,33 +39,57 @@ export class HostWindowService {
       .filter((width) => hasValue(width));
   }
 
+  get widthCategory(): Observable<WidthCategory> {
+    return this.getWidthObs().pipe(
+      map((width: number) => {
+        if (width < GridBreakpoint.SM_MIN) {
+          return WidthCategory.XS
+        } else if (width >= GridBreakpoint.SM_MIN && width < GridBreakpoint.MD_MIN) {
+          return WidthCategory.SM
+        } else if (width >= GridBreakpoint.MD_MIN && width < GridBreakpoint.LG_MIN) {
+          return WidthCategory.MD
+        } else if (width >= GridBreakpoint.LG_MIN && width < GridBreakpoint.XL_MIN) {
+          return WidthCategory.LG
+        } else {
+          return WidthCategory.XL
+        }
+      }),
+      distinctUntilChanged()
+    );
+  }
+
   isXs(): Observable<boolean> {
-    return this.getWidthObs()
-      .map((width) => width < GridBreakpoint.SM)
-      .distinctUntilChanged();
+    return this.widthCategory.pipe(
+      map((widthCat: WidthCategory) => widthCat === WidthCategory.XS),
+      distinctUntilChanged()
+    );
   }
 
   isSm(): Observable<boolean> {
-    return this.getWidthObs()
-      .map((width) => width >= GridBreakpoint.SM && width < GridBreakpoint.MD)
-      .distinctUntilChanged();
+    return this.widthCategory.pipe(
+      map((widthCat: WidthCategory) => widthCat === WidthCategory.SM),
+      distinctUntilChanged()
+    );
   }
 
   isMd(): Observable<boolean> {
-    return this.getWidthObs()
-      .map((width) => width >= GridBreakpoint.MD && width < GridBreakpoint.LG)
-      .distinctUntilChanged();
+    return this.widthCategory.pipe(
+      map((widthCat: WidthCategory) => widthCat === WidthCategory.MD),
+      distinctUntilChanged()
+    );
   }
 
   isLg(): Observable<boolean> {
-    return this.getWidthObs()
-      .map((width) => width >= GridBreakpoint.LG && width < GridBreakpoint.XL)
-      .distinctUntilChanged();
+    return this.widthCategory.pipe(
+      map((widthCat: WidthCategory) => widthCat === WidthCategory.LG),
+      distinctUntilChanged()
+    );
   }
 
   isXl(): Observable<boolean> {
-    return this.getWidthObs()
-      .map((width) => width >= GridBreakpoint.XL)
-      .distinctUntilChanged();
+    return this.widthCategory.pipe(
+      map((widthCat: WidthCategory) => widthCat === WidthCategory.XL),
+      distinctUntilChanged()
+    );
   }
 }
diff --git a/src/app/shared/object-grid/collection-grid-element/collection-grid-element.component.html b/src/app/shared/object-grid/collection-grid-element/collection-grid-element.component.html
index b1287212a3..9fecb51b9a 100644
--- a/src/app/shared/object-grid/collection-grid-element/collection-grid-element.component.html
+++ b/src/app/shared/object-grid/collection-grid-element/collection-grid-element.component.html
@@ -1,13 +1,13 @@
 <div class="card">
-  <a [routerLink]="['/collections/' + object.id]"class="card-img-top">
-    <ds-comcol-page-logo [logo]="object.logo">
-    </ds-comcol-page-logo>
+  <a [routerLink]="['/collections/', object.id]" class="card-img-top">
+    <ds-grid-thumbnail [thumbnail]="object.logo">
+    </ds-grid-thumbnail>
   </a>
   <div class="card-body">
     <h4 class="card-title">{{object.name}}</h4>
     <p *ngIf="object.shortDescription" class="card-text">{{object.shortDescription}}</p>
     <div class="text-center">
-      <a [routerLink]="['/collections/' + object.id]" class="lead btn btn-primary viewButton">View</a>
+      <a [routerLink]="['/collections/', object.id]" class="lead btn btn-primary viewButton">View</a>
     </div>
 
   </div>
diff --git a/src/app/shared/object-grid/community-grid-element/community-grid-element.component.html b/src/app/shared/object-grid/community-grid-element/community-grid-element.component.html
index b6f4c5c5d9..31a9e8ad3d 100644
--- a/src/app/shared/object-grid/community-grid-element/community-grid-element.component.html
+++ b/src/app/shared/object-grid/community-grid-element/community-grid-element.component.html
@@ -1,14 +1,14 @@
 <div class="card">
 
-  <a [routerLink]="['/communities/' + object.id]"class="card-img-top">
-    <ds-comcol-page-logo [logo]="object.logo">
-    </ds-comcol-page-logo>
+  <a [routerLink]="['/communities/', object.id]" class="card-img-top">
+    <ds-grid-thumbnail [thumbnail]="object.logo">
+    </ds-grid-thumbnail>
   </a>
   <div class="card-body">
     <h4 class="card-title">{{object.name}}</h4>
     <p *ngIf="object.shortDescription" class="card-text">{{object.shortDescription}}</p>
     <div class="text-center">
-      <a [routerLink]="['/communities/' + object.id]" class="lead btn btn-primary viewButton">View</a>
+      <a [routerLink]="['/communities/', object.id]" class="lead btn btn-primary viewButton">View</a>
     </div>
   </div>
 </div>
diff --git a/src/app/shared/object-grid/item-grid-element/item-grid-element.component.html b/src/app/shared/object-grid/item-grid-element/item-grid-element.component.html
index 328bfc3bc9..cc2f2efdb1 100644
--- a/src/app/shared/object-grid/item-grid-element/item-grid-element.component.html
+++ b/src/app/shared/object-grid/item-grid-element/item-grid-element.component.html
@@ -1,6 +1,6 @@
 <div class="card">
 
-  <a [routerLink]="['/items/' + object.id]" class="card-img-top">
+  <a [routerLink]="['/items/', object.id]" class="card-img-top">
     <ds-grid-thumbnail [thumbnail]="object.getThumbnail()">
     </ds-grid-thumbnail>
   </a>
@@ -16,7 +16,7 @@
     <p *ngIf="object.findMetadata('dc.description.abstract')" class="item-abstract card-text">{{object.findMetadata("dc.description.abstract") | dsTruncate:[200] }}</p>
 
     <div class="text-center">
-      <a [routerLink]="['/items/' + object.id]" class="lead btn btn-primary viewButton">View</a>
+      <a [routerLink]="['/items/', object.id]" class="lead btn btn-primary viewButton">View</a>
     </div>
   </div>
 </div>
diff --git a/src/app/shared/object-grid/object-grid.component.html b/src/app/shared/object-grid/object-grid.component.html
index fcf3a42662..18aa2dd2e7 100644
--- a/src/app/shared/object-grid/object-grid.component.html
+++ b/src/app/shared/object-grid/object-grid.component.html
@@ -10,12 +10,14 @@
   (sortDirectionChange)="onSortDirectionChange($event)"
   (sortFieldChange)="onSortFieldChange($event)"
   (paginationChange)="onPaginationChange($event)">
-    <div class="card-columns" *ngIf="objects?.hasSucceeded" @fadeIn>
-        <div
-          *ngFor="let object of objects?.payload?.page">
+    <div class="card-columns" *ngIf="objects?.hasSucceeded">
+      <div class="card-column" *ngFor="let column of (columns$ | async)" @fadeIn>
+        <div class="card-element" *ngFor="let object of column">
           <ds-wrapper-grid-element [object]="object"></ds-wrapper-grid-element>
+        </div>
       </div>
     </div>
   <ds-error *ngIf="objects.hasFailed | async" message="{{'error.objects' | translate}}"></ds-error>
   <ds-loading *ngIf="objects.isLoading | async" message="{{'loading.objects' | translate}}"></ds-loading>
 </ds-pagination>
+
diff --git a/src/app/shared/object-grid/object-grid.component.scss b/src/app/shared/object-grid/object-grid.component.scss
index 1b9418be48..33b158d971 100644
--- a/src/app/shared/object-grid/object-grid.component.scss
+++ b/src/app/shared/object-grid/object-grid.component.scss
@@ -11,14 +11,33 @@ ds-wrapper-grid-element ::ng-deep {
   }
 }
 
+$gutter: ($grid-gutter-width / 2);
+$min-width: 300px;
+$max-cols: 3;
+
 .card-columns {
-  @include media-breakpoint-only(lg) {
-    column-count: 3;
+  display: flex;
+  flex-wrap: wrap;
+  margin-left: -$gutter;
+  margin-top: -$gutter;
+
+  .card-column {
+      flex: 1 0 $min-width;
+      margin-left: $gutter;
+      margin-top: $gutter;
+
+      @for $i from 2 through $max-cols {
+        $screen-width: ($min-width*$i)+($gutter*$i);
+        $column-width: (100%/$i);
+        @media (min-width: $screen-width) {
+          max-width: calc(#{$column-width} - #{$gutter});
+        }
+      }
+
+      $column-width: (100%/$max-cols);
+      @media (min-width: $min-width*$max-cols) {
+        min-width: calc(#{$column-width} - #{$gutter});
+      }
   }
-  @include media-breakpoint-only(sm) {
-    column-count: 2;
-  }
-  @include media-breakpoint-only(xs) {
-    column-count: 1;
-  }
-}
\ No newline at end of file
+}
+
diff --git a/src/app/shared/object-grid/object-grid.component.ts b/src/app/shared/object-grid/object-grid.component.ts
index a8f8ebb183..bffa79b62b 100644
--- a/src/app/shared/object-grid/object-grid.component.ts
+++ b/src/app/shared/object-grid/object-grid.component.ts
@@ -2,16 +2,21 @@ import {
   ChangeDetectionStrategy,
   Component,
   EventEmitter,
-  Input,
+  Input, OnInit,
   Output,
   ViewEncapsulation
 } from '@angular/core';
+import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+import { Observable } from 'rxjs/Observable';
+import { map } from 'rxjs/operators';
 
 import { SortDirection, SortOptions } from '../../core/cache/models/sort-options.model';
 import { PaginatedList } from '../../core/data/paginated-list';
 
 import { RemoteData } from '../../core/data/remote-data';
 import { fadeIn } from '../animations/fade';
+import { hasNoValue, hasValue } from '../empty.util';
+import { HostWindowService, WidthCategory } from '../host-window.service';
 import { ListableObject } from '../object-collection/shared/listable-object.model';
 
 import { PaginationComponentOptions } from '../pagination/pagination-component-options.model';
@@ -25,18 +30,18 @@ import { PaginationComponentOptions } from '../pagination/pagination-component-o
   animations: [fadeIn]
 })
 
-export class ObjectGridComponent {
+export class ObjectGridComponent implements OnInit {
 
   @Input() config: PaginationComponentOptions;
   @Input() sortConfig: SortOptions;
   @Input() hideGear = false;
   @Input() hidePagerWhenSinglePage = true;
-  private _objects: RemoteData<PaginatedList<ListableObject>>;
+  private _objects$: BehaviorSubject<RemoteData<PaginatedList<ListableObject>>>;
   @Input() set objects(objects: RemoteData<PaginatedList<ListableObject>>) {
-    this._objects = objects;
+    this._objects$.next(objects);
   }
   get objects() {
-    return this._objects;
+    return this._objects$.getValue();
   }
 
   /**
@@ -77,6 +82,55 @@ export class ObjectGridComponent {
    */
   @Output() sortFieldChange: EventEmitter<string> = new EventEmitter<string>();
   data: any = {};
+  columns$: Observable<ListableObject[]>
+
+  constructor(private hostWindow: HostWindowService) {
+    this._objects$ = new BehaviorSubject(undefined);
+  }
+
+  ngOnInit(): void {
+    const nbColumns$ = this.hostWindow.widthCategory.pipe(
+      map((widthCat: WidthCategory) => {
+        switch (widthCat) {
+          case WidthCategory.XL:
+          case WidthCategory.LG: {
+            return 3;
+          }
+          case WidthCategory.MD:
+          case WidthCategory.SM: {
+            return 2;
+          }
+          default: {
+            return 1;
+          }
+        }
+      })
+    ).startWith(3);
+
+    this.columns$ = Observable.combineLatest(
+      nbColumns$,
+      this._objects$,
+      (nbColumns, objects) => {
+        if (hasValue(objects) && hasValue(objects.payload) && hasValue(objects.payload.page)) {
+          const page = objects.payload.page;
+
+          const result = [];
+
+          page.forEach((obj: ListableObject, i: number) => {
+            const colNb = i % nbColumns;
+            let col = result[colNb];
+            if (hasNoValue(col)) {
+              col = [];
+            }
+            result[colNb] = [...col, obj];
+          });
+          return result;
+        } else {
+          return [];
+        }
+    });
+  }
+
   onPageChange(event) {
     this.pageChange.emit(event);
   }
diff --git a/src/app/shared/object-grid/search-result-grid-element/collection-search-result/collection-search-result-grid-element.component.html b/src/app/shared/object-grid/search-result-grid-element/collection-search-result/collection-search-result-grid-element.component.html
index d6b1bfb5f4..91548d945d 100644
--- a/src/app/shared/object-grid/search-result-grid-element/collection-search-result/collection-search-result-grid-element.component.html
+++ b/src/app/shared/object-grid/search-result-grid-element/collection-search-result/collection-search-result-grid-element.component.html
@@ -1,13 +1,13 @@
 <div class="card">
-  <a [routerLink]="['/collections/' + dso.id]"class="card-img-top">
-    <ds-comcol-page-logo [logo]="dso.logo">
-    </ds-comcol-page-logo>
+  <a [routerLink]="['/collections/', dso.id]" class="card-img-top">
+    <ds-grid-thumbnail [thumbnail]="dso.logo">
+    </ds-grid-thumbnail>
   </a>
   <div class="card-body">
     <h4 class="card-title">{{dso.name}}</h4>
     <p *ngIf="dso.shortDescription" class="card-text">{{dso.shortDescription}}</p>
     <div class="text-center">
-      <a [routerLink]="['/collections/' + dso.id]" class="lead btn btn-primary viewButton">View</a>
+      <a [routerLink]="['/collections/',  dso.id]" class="lead btn btn-primary viewButton">View</a>
     </div>
   </div>
 </div>
diff --git a/src/app/shared/object-grid/search-result-grid-element/community-search-result/community-search-result-grid-element.component.html b/src/app/shared/object-grid/search-result-grid-element/community-search-result/community-search-result-grid-element.component.html
index 8ff6874bff..95094a6fa1 100644
--- a/src/app/shared/object-grid/search-result-grid-element/community-search-result/community-search-result-grid-element.component.html
+++ b/src/app/shared/object-grid/search-result-grid-element/community-search-result/community-search-result-grid-element.component.html
@@ -1,14 +1,14 @@
 <div class="card">
 
-  <a [routerLink]="['/communities/' + dso.id]"class="card-img-top">
-    <ds-comcol-page-logo [logo]="dso.logo">
-    </ds-comcol-page-logo>
+  <a [routerLink]="['/communities/', dso.id]" class="card-img-top">
+    <ds-grid-thumbnail [thumbnail]="dso.logo">
+    </ds-grid-thumbnail>
   </a>
   <div class="card-body">
     <h4 class="card-title">{{dso.name}}</h4>
     <p *ngIf="dso.shortDescription" class="card-text">{{dso.shortDescription}}</p>
     <div class="text-center">
-      <a [routerLink]="['/communities/' + dso.id]" class="lead btn btn-primary viewButton">View</a>
+      <a [routerLink]="['/communities/', dso.id]" class="lead btn btn-primary viewButton">View</a>
     </div>
   </div>
 </div>
diff --git a/src/app/shared/search-form/search-form.component.spec.ts b/src/app/shared/search-form/search-form.component.spec.ts
index d148429b01..30f5801cc2 100644
--- a/src/app/shared/search-form/search-form.component.spec.ts
+++ b/src/app/shared/search-form/search-form.component.spec.ts
@@ -2,7 +2,6 @@ import { ComponentFixture, TestBed, async, tick, fakeAsync } from '@angular/core
 import { By } from '@angular/platform-browser';
 import { DebugElement } from '@angular/core';
 import { SearchFormComponent } from './search-form.component';
-import { Observable } from 'rxjs/Observable';
 import { FormsModule } from '@angular/forms';
 import { ResourceType } from '../../core/shared/resource-type';
 import { RouterTestingModule } from '@angular/router/testing';
diff --git a/src/app/shared/search-form/search-form.component.ts b/src/app/shared/search-form/search-form.component.ts
index 49f825e28c..ed7572f94d 100644
--- a/src/app/shared/search-form/search-form.component.ts
+++ b/src/app/shared/search-form/search-form.component.ts
@@ -1,4 +1,5 @@
 import { Component, Input } from '@angular/core';
+import { SearchService } from '../../+search-page/search-service/search.service';
 import { DSpaceObject } from '../../core/shared/dspace-object.model';
 import { Router } from '@angular/router';
 import { isNotEmpty, hasValue, isEmpty } from '../empty.util';
@@ -17,8 +18,7 @@ import { isNotEmpty, hasValue, isEmpty } from '../empty.util';
 export class SearchFormComponent {
   @Input() query: string;
   selectedId = '';
-  // Optional existing search parameters
-  @Input() currentParams: {};
+  @Input() currentUrl: string;
   @Input() scopes: DSpaceObject[];
 
   @Input()
@@ -34,16 +34,14 @@ export class SearchFormComponent {
   }
 
   updateSearch(data: any) {
-    this.router.navigate(['/search'], {
-      queryParams: Object.assign({}, this.currentParams,
-        {
-          query: data.query,
-          scope: data.scope || undefined,
-          page: data.page || 1
-        }
-      )
-    })
-    ;
+    this.router.navigate([this.currentUrl], {
+      queryParams: {
+        query: data.query,
+        scope: data.scope || undefined,
+        page: data.page || 1
+      },
+      queryParamsHandling: 'merge'
+    });
   }
 
   isNotEmpty(object: any) {
diff --git a/webpack/webpack.common.js b/webpack/webpack.common.js
index 6bf4620ca7..904e52e0ff 100644
--- a/webpack/webpack.common.js
+++ b/webpack/webpack.common.js
@@ -13,6 +13,9 @@ module.exports = {
   output: {
     path: root('dist')
   },
+  watchOptions: {
+    aggregateTimeout: 500,
+  },
   module: {
     rules: [{
         test: /\.ts$/,