[Mobile] Clean-up

Cleaned up scss and also, the
edit/new tab/full screen buttons are
hidden in mobile, temporarily.

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

@@ -44,7 +44,7 @@
     }         
 }
 
-.button-show {
+.button-pos {
     position: absolute;
     @include transition-duration(.2s);
     @include phone {        
@@ -55,17 +55,6 @@
     }      
 }
 
-.button-hide {
-    position: absolute;
-    @include transition-duration(.2s);
-    @include phone {
-        left: $phoneSlideMenuWidth;
-    }
-    @include tablet {
-        left: $tabletSlideMenuWidth;
-    }     
-}
-
 .object-header-mobile {
     position: relative;
     @include phone {