Small layout fixes
Fixed problem with comment edit links
Fixed problems with multiple event handlers

Whenever DOM update event handlers were executed, jQuery bindings were appended
instead of being replaced. It resulted in funny scenarios like starting to show
multiple confirmation dialogs when trying to delete a post, after
adding/removing it from favorites.
Fixed ban and unban confirmation messages
Changed LOWER(?) to ? COLLATE NOCASE
Tag and user list: a-z order is case insensitive
Merging and renaming tags yields status messages

Previously, it just redirected back to tag list without any kind of
notification about success.
Post list errors are shown in nicer way
Registered users can mass tag their own posts
More capable privilege system

Following privileges for post actions can now understand different settings for
everyone and for uploader:

* Scoring posts
* Featuring posts
* Flagging posts
* Favoriting posts

Additionally, privilege for flagging users can now understand different
settings for everyone and for the user that is currently logged in.

In other words: with this update admin can configure privileges so that scoring
own posts or flagging oneself will be prohibited, while scoring other people's
posts or flagging others will be okay.
Added lightbox to post uploads
Exit confirmation tweaks in post upload

Confirmation is disabled after user removes last file from the upload queue.
It's enabled again whenever user adds something.
Fixed tag pagination on endless scrolling