ACP: Added lockout management feature

Fixed undefined $score_min in password change. Potential security concern?

Namespace_Default: added a workaround for an inconsistency in SQL. Basically, if you join the same table multiple times under multiple aliases, COUNT() always uses the first instance. Was affecting the comment counter in the "discussion" button.

JSON preparser: fixed corruption of strings that include the exact pattern word, comma, space, word, colon

Merge from accidental split

DBAL: Majorly cleaned up and improved coding standards/documentation

Installer: cleaned up CSS header; updated comments in config.php to not say that passwords are stored with AES (as they are now stored with HMAC-SHA1)

Updated KNOWN_BUGS to point to our issue tracker

Crap, broke page editing. Fixed it.

Drafts saved on nonexistent pages now show up. Fixes issue 7.

Re-merge changes from a2hosting dev

Set up more sensible defaults (UTC, DST off) for timezone preferences. Also modified enano_date() to properly include GMT offsets when timezone characters are used. Fixes issue 4.

CAPTCHA: Added smart autosubmit for registration page. Usability testing was so-so, may back out later.

A couple fixes to permission out-of-scope errors.

Wikitext parser: re-added mailto support

Sessions: Made acl_check_deps() verify scope, so that all of an action's dependencies must apply to the namespace of the given action.