[ACA-1508] extensions: wave 1 (#480)

* initial structure scaffold

* core extensions module

* simple navbar composition

* allow using app routes instead of registered

* migrate to new navbar setup

* remove commented out tests

* populate toolbar

* evaluate expressions

* redirect to url from toolbar

* populate "open with" viewer menu

* update test setup

* experimental flag for extensions

* test fixes

* fix tests

* code improvements, order support

* improve routing management

* populate "create" menu

* extra dictionaries for spellcheck

* allow disabling extension content

* support file/folder targets for toolbar actions

* add safety check

* navigate directly

* toolbar actions for all pages

* support route data

* "experimental" flag for "create" menu extensions

* code fixes

src/app/components/files/files.component.html

@@ -13,6 +13,15 @@
             <mat-icon *ngIf="displayMode === 'gallery'" matTooltip="{{ 'APP.DOCUMENT_LIST.TOOLBAR.LISTVIEW' | translate }}">list</mat-icon>
         </button>
         <adf-toolbar class="inline" *ngIf="!selection.isEmpty">
+            <ng-container *ifExperimental="'extensions'">
+                <button *ngFor="let entry of actions"
+                    mat-icon-button
+                    color="primary"
+                    title="{{ entry.title | translate }}"
+                    (click)="runAction(entry.target.action)">
+                    <mat-icon>{{ entry.icon }}</mat-icon>
+                </button>
+            </ng-container>
             <button
                 color="primary"
                 mat-icon-button