title: Qt Creator problem. UI changes not showing when project is built
body: <p>I'm making changes to a form in Creator but when I build the changes are not being "refreshed".
  I've gone so far as to remove every element from the form and get rid of every stylesheet but when I build the project I get the same result; as if I had never made a change at all.
  What gives? Am I missing something obvious? (obvious to everyone but me.. obviously)</p>