Fix Tierry's bio.

Tierry's bio had [td] without [table]. Now something like that is
disallowed, considering it breaks the website layout.
Improve IP ban supports.

* Implement IRC style whitelists, useful if most IPs in range, except
  for one are spam. Or something.

* Fixed a bug where 1.2.3.4 mask was matched by 1.2.3.42.
Fix IP banning
Strange bugs break inserting IP bans.

It's annoying.
PHP 5.5 doesn't have JSON extension.

Make sure installer notices this specific case.
Move zxcvbn to js
Killed ajaxcallbacks.php and replaced it with regular pages.
Fix delete/undelete.
fix autorefresh.
Merge branch 'master' into notifications

Conflicts:
	js/tricks.js