Add a 'FlatToolButton' style. Mainly for OSX, as QToolButton looks awful...


git-svn-id: http://cantata.googlecode.com/svn/trunk@5549 b1e49159-3266-923f-9c3e-04f16369770a
No need to adjus shade if going to draw background when down


git-svn-id: http://cantata.googlecode.com/svn/trunk@5550 b1e49159-3266-923f-9c3e-04f16369770a