Stop repository if the directory disappears (fixes #154)

gui/app.js

@@ -142,7 +142,7 @@ syncthing.controller('SyncthingCtrl', function ($scope, $http) {
         }
 
         if ($scope.model[repo].invalid !== '') {
-            return 'text-warning';
+            return 'text-danger';
         }
 
         var state = '' + $scope.model[repo].state;

gui/index.html

@@ -134,7 +134,7 @@
             <ul class="list-unstyled" ng-repeat="repo in repos">
               <li>
                 <span class="text-monospace">{{repo.Directory}}</span>
-                <span ng-if="repo.Invalid" class="label label-danger">Invalid: {{repo.Invalid}}</span>
+                <span ng-if="model[repo.ID].invalid" class="label label-danger">{{model[repo.ID].invalid}}</span>
                 <ul class="list-no-bullet">
                   <li>
                     <div class="li-column" title="Repository ID">