[Mobile] Clean Up

Removed gap below bottom bar. Moved
around constants for the resizing
of the tree. Also added comments in
layout and reformatted that slightly.

platform/commonUI/general/res/sass/mobile/_layout.scss

@@ -27,9 +27,8 @@
     @include phoneandtablet {
         position: absolute;
         left: 0; top: 0;
-        right: 0; left: 0;
+        right: 0;
         white-space: nowrap;
-        height: 100%;
     }
 }