Modifid appearence of top menubar and some changes in drawer_widget.html also removed unecessary js and css files.

Modifies appearance of top menubar :

 - Changes made in gapps_menubar.html
 - While current GApp is highlighted with green background.
 - Modified drawer_widget.html - added some arrows in place of buttons for up, down, top, bottom.

Deleted files in static/ndf, which were associated with bootstrap framework :

 - Bootstrap folder.
 - Some js files in js folder.
 - Fonts folder in static assocaited with bootstrap