function redirect()

Hmm.. Same function was in use all over the place, simply recreated in
full, rather than abstracted.
Renamed in gob_admin.php to be admin_redirect, to differentiate it from
the user version "redirect", admin_redirect defaults to admin pages..
so, makes sense. 
Had to go through and change all administrative uses of the function,
removed extraneous function declarations for the old scheme, and changed
all calls to use admin_redirect.