[CSTPER-222] handle metadata reading for communities and collections

Removed handle field and the setter from community and collection models.

src/app/shared/search-form/search-form.component.spec.ts

@@ -109,7 +109,6 @@ describe('SearchFormComponent', () => {
 
 export const objects: DSpaceObject[] = [
   Object.assign(new Community(), {
-    handle: '10673/11',
     logo: {
       self: {
         _isScalar: true,
@@ -162,12 +161,17 @@ export const objects: DSpaceObject[] = [
           language: null,
           value: 'OR2017 - Demonstration'
         }
-      ]
+      ],
+      'dc.identifier.uri': [
+        {
+          language: null,
+          value: 'http://localhost:4000/handle/10673/11'
+        }
+      ],
     }
   }),
   Object.assign(new Community(),
     {
-      handle: '10673/1',
       logo: {
         self: {
           _isScalar: true,
@@ -220,7 +224,13 @@ export const objects: DSpaceObject[] = [
             language: null,
             value: 'Sample Community'
           }
-        ]
+        ],
+        'dc.identifier.uri': [
+          {
+            language: null,
+            value: 'http://localhost:4000/handle/10673/1'
+          }
+        ],
       }
     }
   )