Bug 1155083 - Properly hide reader view tablet on landscape tablets. r=bnicholson

--HG--
extra : rebase_source : 536896d127004696690e3129e61931d19cba1b16

mobile/android/themes/core/aboutReader.css

@@ -620,6 +620,10 @@ body {
     height: 56px;
   }
 
+  .toolbar {
+    bottom: -57px;
+  }
+
   .toolbar > * {
     width: 56px;
   }