Add a classname to the loading bar (#1826)

app/assets/javascripts/components/features/ui/index.jsx

@@ -141,7 +141,7 @@ const UI = React.createClass({
         {mountedColumns}
 
         <NotificationsContainer />
-        <LoadingBarContainer style={{ backgroundColor: '#2b90d9', left: '0', top: '0' }} />
+        <LoadingBarContainer className="loading-bar" />
         <ModalContainer />
         <UploadArea active={draggingOver} />
       </div>

app/assets/stylesheets/components.scss

@@ -2056,3 +2056,11 @@ button.icon-button.active i.fa-retweet {
     flex: 0 0 auto;
   }
 }
+
+.loading-bar {
+  background-color: $color4;
+  height: 3px;
+  position: absolute;
+  top: 0;
+  left: 0;
+}