Workaround a bug when 2 webviews are loaded at the same time.

In some cases the spectron tests time out in app:start. This should
prevent it.

Change-type: patch

lib/gui/app/pages/main/templates/main.tpl.html

@@ -92,6 +92,7 @@
 
   <div>
     <featured-project
+      ng-if="main.state.isFlashing()"
       ng-class="{
         'fp-visible': main.state.isFlashing() && main.isWebviewShowing
       }"