fix(validators): fixed improved error message on user group validators

rhodecode/model/validators.py

@@ -223,7 +223,7 b' def ValidUserGroup(localizer, edit=False'
             'invalid_group': _('Invalid user group name'),
             'group_exist': _('User group `%(usergroup)s` already exists'),
             'invalid_usergroup_name':
-                _('user group name may only contain alphanumeric '
+                _('User group name may only contain alphanumeric '
                   'characters underscores, periods or dashes and must begin '
                   'with alphanumeric character')
         }
@@ -231,9 +231,7 b' def ValidUserGroup(localizer, edit=False'
         def _validate_python(self, value, state):
             if value in ['default']:
                 msg = M(self, 'invalid_group', state)
-                raise formencode.Invalid(
-                    msg, value, state, error_dict={'users_group_name': msg}
-                )
+                raise formencode.Invalid(msg, value, state)
             # check if group is unique
             old_ugname = None
             if edit:
@@ -251,9 +249,7 b' def ValidUserGroup(localizer, edit=False'
 
             if re.match(r'^[a-zA-Z0-9]{1}[a-zA-Z0-9\-\_\.]+$', value) is None:
                 msg = M(self, 'invalid_usergroup_name', state)
-                raise formencode.Invalid(
-                    msg, value, state, error_dict={'users_group_name': msg}
-                )
+                raise formencode.Invalid(msg, value, state)
     return _validator