Disable role selection for Cloudrons with user restriction

src/views/users.js

@@ -26,10 +26,10 @@ angular.module('Application').controller('UsersController', ['$scope', '$locatio
     $scope.userInfo = Client.getUserInfo();
 
     $scope.roles = [
-        { id: 'user', name: 'User' },
-        { id: 'usermanager', name: 'User Manager' },
-        { id: 'admin', name: 'Administrator' },
-        { id: 'owner', name: 'Owner' }
+        { id: 'user', name: 'User', disabled: false },
+        { id: 'usermanager', name: 'User Manager', disabled: true },
+        { id: 'admin', name: 'Administrator', disabled: true },
+        { id: 'owner', name: 'Owner', disabled: true }
     ];
 
     $scope.allUsers = [];
@@ -681,6 +681,17 @@ angular.module('Application').controller('UsersController', ['$scope', '$locatio
             }
         });
     });
+    Client.onReady(function () {
+        // Update available roles depending on features
+        if ($scope.config.features.userMaxCount === null) {
+            $scope.roles = [
+                { id: 'user', name: 'User', disabled: false },
+                { id: 'usermanager', name: 'User Manager', disabled: false },
+                { id: 'admin', name: 'Administrator', disabled: false },
+                { id: 'owner', name: 'Owner', disabled: false }
+            ];
+        }
+    });
 
     // setup all the dialog focus handling
     ['userAddModal', 'userRemoveModal', 'userEditModal', 'groupAddModal', 'groupEditModal', 'groupRemoveModal'].forEach(function (id) {