GUAC-932: Display current connection/group permissions in user edit interface.

guacamole/src/main/webapp/app/manage/templates/connectionPermission.html

@@ -27,7 +27,7 @@
     </div>
 
     <!-- Checkbox -->
-    <input type="checkbox" ng-model="connectionPermissions[item.identifier]" ng-change="markConnectionPermissionModified(item.identifier)"/>
+    <input type="checkbox" ng-checked="context.canReadConnection(item.identifier)"/>
 
     <!-- Connection name -->
     <span class="name">{{item.name}}</span>