Merge remote-tracking branch 'upstream/master' into master-recompile

css/helios.css

@@ -35,7 +35,7 @@ html[xmlns] .clearfix {
   overflow: hidden;
   height: 100%;
   width: 100%;
-  background: #fff;
+  /*background: #fff*/;
 }
 #helios .CodeMirror-hints {
   border-radius: 0;