Ability to collapse the root directory in the drive

www/drive/file.less

@@ -190,7 +190,8 @@ span {
     }
     .docTree {
         margin-top: 20px;
-        padding: 0 0 0 20px;
+        //padding: 0 0 0 20px;
+        padding: 0;
         cursor: auto;
         &li, li {
             padding: 0;
@@ -304,6 +305,24 @@ span {
             top: -1px;
         }
     }
+    .docTree {
+        .root > .element-row > .expcol {
+            position: relative;
+            top:0;
+            left: -10px;
+        }
+        .root > .element-row > .folder {
+            margin-left: -5px;
+        }
+        .root {
+            &> .element-row {
+                padding-left: 20px;
+            }
+            &> ul {
+                padding-left: 30px;
+            }
+        }
+    }
 
     // Expand/collapse lines
     .docTree ul {

www/drive/main.js

@@ -2092,7 +2092,10 @@ define([
                 var $rootIcon = filesOp.isFolderEmpty(files[ROOT]) ?
                     (isRootOpened ? $folderOpenedEmptyIcon : $folderEmptyIcon) :
                     (isRootOpened ? $folderOpenedIcon : $folderIcon);
-                var $rootElement = createTreeElement(ROOT_NAME, $rootIcon.clone(), [ROOT], false, true, false, isRootOpened);
+                var $rootElement = createTreeElement(ROOT_NAME, $rootIcon.clone(), [ROOT], false, true, true, isRootOpened);
+                if (!filesOp.hasSubfolder(root)) {
+                    $rootElement.find('.expcol').css('visibility', 'hidden');
+                }
                 $rootElement.addClass('root');
                 $rootElement.find('>.element-row').contextmenu(openDirectoryContextMenu);
                 $('<ul>', {'class': 'docTree'}).append($rootElement).appendTo($container);