collapse groups / show groups blows away ?login_form

[benmoss]

since you handled my other bug report so well:

when you use the "Show Groups" / "Collapse Groups" links, they don't keep the login_form query param around in the URL, so the page doesn't work anymore. Figured out I could do ?login_form&ignore_groups and it works, but would be nice if the links worked :).

[dgodd]

All params are now kept

[benmoss]

wooooooooooohooooooooooooooooooooo