Fix 1px UI issues with drive icons

www/drive/app-drive.less

@@ -746,6 +746,7 @@
             padding: 0;
             .fa, .cptools {
                 margin: 0;
+                vertical-align: top;
             }
             button {
                 height: @variables_bar-height;
@@ -816,16 +817,6 @@
                 font-family: cptools;
             }
         }
-        /* The container <div> - needed to position the dropdown content */
-        .cp-dropdown-container {
-            margin: 2px 2px;
-            line-height: 1em;
-            position: relative;
-            display: inline-block;
-        }
-        .cp-dropdown-content {
-            margin-right: 2px;
-        }
 
         .cp-app-drive-path {
             width: 100%;

www/drive/inner.js

@@ -2682,7 +2682,6 @@ define([
 
             if (APP.mobile()) {
                 var $context = $('<button>', {
-                    'class': 'cp-dropdown-container',
                     id: 'cp-app-drive-toolbar-context-mobile'
                 });
                 $context.append($('<span>', {'class': 'fa fa-caret-down'}));