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

src/app/groups/group-page/group-page.component.html

@@ -14,6 +14,18 @@
   </mat-expansion-panel>
   }
 
+  <mat-expansion-panel>
+    <mat-expansion-panel-header>
+      <mat-panel-title>Permissions</mat-panel-title>
+      <mat-panel-description class="muted">
+        {{permissions.length}} permission{{permissions.length == 1 ? '' : 's'}}
+      </mat-panel-description>
+    </mat-expansion-panel-header>
+    <permission-list [permissions]="permissions"
+                     [groups]="groups"
+                     [group]="group" />
+  </mat-expansion-panel>
+
   <mat-expansion-panel>
     <mat-expansion-panel-header>
       <mat-panel-title>Policies</mat-panel-title>
@@ -43,7 +55,7 @@
         </article>
         <article class="right">
           <button mat-raised-button
-                  class="delete"
+                  class="danger"
                   (click)="delete()">
             <mat-icon>delete</mat-icon>Delete this group.
           </button>