Fixing: http://wush.net/trac/pincdev/ticket/13634 - AMS: 'Cancel' on any any new or edit form does not close the form for FF and Chrome

Cancel should not be a submit button. Cancel should be a link. Converted it to a link. This does break the functionality that was put in place to delete any ajax created associated models, but I think we at pinc can live with that for a working cancel button.
LYN Trunk / version bump to 2013.1.28