change logs:
Fix known bugs.
Optimized mobile news feed width.
Add Email notifications for actions of "following","friend request","mentions".
Add SMTP option for Email notification.
Add account settings that user can unsubscribe Email notifications.
Add an image button on the status share box. (If user uploaded an image when updating status, a image story will be automatically created)
Upgraded default theme.

You only need to upload updated files. No database changes.