Merge pull request #2144 from atmire/fix-dso-edit-menu-dropdowns

Fix DSO edit menu dropdowns

Author: tdonohue

src/app/shared/dso-page/dso-page.module.ts

@@ -9,7 +9,7 @@ import {
 import {
   DsoEditMenuExpandableSectionComponent
 } from '../dso-page/dso-edit-menu/dso-edit-expandable-menu-section/dso-edit-menu-expandable-section.component';
-import { NgbTooltipModule } from '@ng-bootstrap/ng-bootstrap';
+import { NgbDropdownModule, NgbTooltipModule } from '@ng-bootstrap/ng-bootstrap';
 
 const COMPONENTS = [
   DsoEditMenuComponent,
@@ -25,6 +25,7 @@ const MODULES = [
   RouterModule,
   CommonModule,
   NgbTooltipModule,
+  NgbDropdownModule,
 ];
 const PROVIDERS = [