[ADF-1344] New Custom Loading Content Directive for Datatable Component (#4156)

* [ADF-1344] New Custom Loading Content Directive for Datatable Component

* [ADF-1344] Add unit tests for directives on Document List

* [ADF-1344] Add directive prefix to context-menu directive

* [ADF-1344] Old directive selectors have been put back

* [ADF-1344] Add old selector for empty-content directive

lib/process-services/attachment/process-attachment-list.component.html

@@ -5,7 +5,7 @@
                 (showRowActionsMenu)="onShowRowActionsMenu($event)"
                 (executeRowAction)="onExecuteRowAction($event)">
 
-                <no-content-template>
+                <adf-no-content-template>
                     <ng-template>
                         <ng-content *ngIf="hasCustomTemplate; else defaulEmptyList" class="adf-custom-empty-template"></ng-content>
                         <ng-template #defaulEmptyList>
@@ -16,7 +16,7 @@
                             </adf-empty-list>
                         </ng-template>
                     </ng-template>
-                </no-content-template>
+                </adf-no-content-template>
 
     <data-columns>
         <data-column key="icon" type="image" srTitle="ADF_PROCESS_LIST.PROPERTIES.THUMBNAIL" [sortable]="false"></data-column>
@@ -24,12 +24,12 @@
         <data-column key="created" type="date" format="shortDate" title="{{'ADF_PROCESS_LIST.PROPERTIES.CREATED' | translate}}"></data-column>
     </data-columns>
 
-    <loading-content-template>
+    <adf-loading-content-template>
         <ng-template>
             <!--Add your custom loading template here-->
             <mat-progress-spinner class="adf-attachment-list-loading-margin" [color]="'primary'" [mode]="'indeterminate'">
             </mat-progress-spinner>
         </ng-template>
-    </loading-content-template>
+    </adf-loading-content-template>
 
 </adf-datatable>