[DURACOM-191] fix services not loading

src/app/shared/form/builder/form-builder.service.ts

@@ -46,7 +46,7 @@ import { VIRTUAL_METADATA_PREFIX } from '../../../core/shared/metadata.models';
 import { ConfigurationDataService } from '../../../core/data/configuration-data.service';
 import { getFirstCompletedRemoteData } from '../../../core/shared/operators';
 
-@Injectable()
+@Injectable({providedIn: 'root'})
 export class FormBuilderService extends DynamicFormService {
 
   private typeBindModel: DynamicFormControlModel;

src/app/shared/form/form.service.ts

@@ -22,7 +22,7 @@ import {
 import { FormEntry, FormError, FormTouchedState } from './form.reducer';
 import { environment } from '../../../environments/environment';
 
-@Injectable()
+@Injectable({providedIn: 'root'})
 export class FormService {
 
   constructor(

src/app/submission/sections/sections.service.ts

@@ -49,7 +49,7 @@ import { SubmissionSectionError } from '../objects/submission-section-error.mode
 /**
  * A service that provides methods used in submission process.
  */
-@Injectable()
+@Injectable({providedIn: 'root'})
 export class SectionsService {
 
   /**