Remove invalid 'DISCONNECTED' message in drive history mode

www/common/drive-ui.js

@@ -259,12 +259,14 @@ define([
     };
 
     // Handle disconnect/reconnect
-    var setEditable = function (state) {
+    var setEditable = function (state, isHistory) {
         if (APP.closed || !APP.$content || !$.contains(document.documentElement, APP.$content[0])) { return; }
         APP.editable = !APP.readOnly && state;
         if (!state) {
             APP.$content.addClass('cp-app-drive-readonly');
+            if (!isHistory) {
                 $('#cp-app-drive-connection-state').show();
+            }
             $('[draggable="true"]').attr('draggable', false);
         }
         else {

www/drive/inner.js

@@ -119,7 +119,7 @@ define([
 
     var setHistory = function (bool, update) {
         history.isHistoryMode = bool;
-        setEditable(!bool);
+        setEditable(!bool, true);
         if (!bool && update) {
             history.onLeaveHistory();
         }