Merge pull request #488 from sammyshj/updatenewedit

Update new/edit bookmark
Update stats for private bookmarks

Added comment

Fixed comment

Added test for count_user_bookmarks
twitter oauth
Merge pull request #491 from sammyshj/updateprivatestats

Update stats for private bookmarks

Bookmark stats now include count of both public and private bookmarks
Merge pull request #492 from pradyu1993/develop

twitter oauth
twitter celery job