Revamped the administrator's user CP, big time. The admin module now uses a smart form and enables all profile fields, including users_extra, to be changed. Passwords are encrypted when sent. The whole CP has been split off into a different file to accomodate the large amount of code.

0d3a6e93788696278300db61266ae78aeec367c1 release
1eb7b2b4bdbc27a6ec30d4dc7b6d2d72a5f537aa release
8df3abef66473fef1a8ecbbd60a4e94e4f466ec4 release