Added group permissions. Added some global styles. Made groups rely on services' data.

src/app/actions/action-list/action-list.component.html

@@ -1,5 +1,5 @@
 <main>
-  @for (action of actions; track $index) {
+  @for (action of actions; track action.name) {
   <button type="button"
           class="container"
           (click)="modify(action)">

src/app/actions/actions/actions.component.html

@@ -10,7 +10,7 @@
           <mat-select-trigger>
             <mat-icon matPrefix>filter_list</mat-icon>&nbsp;{{filter.name}}
           </mat-select-trigger>
-          @for (item of filters; track $index) {
+          @for (item of filters; track item.name) {
           <mat-option value="{{$index}}">{{item.name}}</mat-option>
           }
         </mat-select>