Merge pull request #3104 from Countly/pts/final

dashboard css was missing from gruntfile

Author: itsiprikshit

Gruntfile.js

@@ -222,6 +222,7 @@ module.exports = function(grunt) {
                         'frontend/express/public/stylesheets/countly-checkbox/countly.checkbox.css',
                         'frontend/express/public/javascripts/dom/tipsy/tipsy.css',
                         'frontend/express/public/javascripts/dom/gridstack/gridstack.css',
+                        'frontend/express/public/javascripts/dom/gridstack/gridstack-extra.css',
                         'frontend/express/public/javascripts/visualization/rickshaw/rickshaw.min.css',
                         'frontend/express/public/javascripts/dom/pace/pace-theme-flash.css',
                         'frontend/express/public/javascripts/dom/drop/drop-theme-countly.min.css',