Fixed typo in RedirectingAction when no return-to data provided in form submission.
RedirectingAction::returnToArgs() has been renamed to returnToPrevious() to avoid conflict with Action::returnToArgs() which returns arguments to be passed to other actions as return-to arguments. All callers should now be updated.
More profile settings actions will now redirect through a login form if visited as a GET request, as would be expected from a bookmark, link sent in e-mail etc.
Refactored some of the returnto handling code. It looks like we have several different ways of handling this in the software, icky!
Marked the session-based functions with fixmes (they'll stomp on other forms when multiple tabs/windows are used) and combined some commonish bits of code between ProfileFormAction and the group block & makeadmin actions where they're using hidden form parameters. Extended that to allow passing dynamic parameters (eg 'page') as well as static ones (action, target user/group).
