Convert Controller_Admin_Recaptcha to Formo.
Remove unneeded redirects in some recently-converted admin forms.
This pattern was accidentally carried over from our Gallery 3.0.x Forge setup.
Convert Controller_Password to Formo.  Add some missing error messages, too.
Merge pull request #353 from shadlaws/fixes_20130506_part2

Fixes 20130506 part2