Ensure the avatar is always updated in all places

Fixes #549

webadmin/src/js/client.js

@@ -86,6 +86,7 @@ angular.module('Application').service('Client', ['$http', 'md5', 'Notification',
         this._clientId = '<%= oauth.clientId %>';
         this._clientSecret = '<%= oauth.clientSecret %>';
         this.apiOrigin = '<%= oauth.apiOrigin %>';
+        this.avatar = this.apiOrigin + '/api/v1/cloudron/avatar?' + String(Math.random()).slice(2);
 
         this.setToken(localStorage.token);
     }

webadmin/src/js/main.js

@@ -4,8 +4,8 @@ angular.module('Application').controller('MainController', ['$scope', '$route',
     $scope.initialized = false;
     $scope.user = Client.getUserInfo();
     $scope.installedApps = Client.getInstalledApps();
-    $scope.cloudronAvatar = Client.apiOrigin + '/api/v1/cloudron/avatar';
     $scope.config = {};
+    $scope.client = Client;
 
     $scope.update = {
         busy: false,