mainwindow now remains visible when user is prompted for save after exit
mainwindow now remains visible when user is prompted for save after exit

git-svn-id: b62a74e6a85b74e782ead772f54cba8e909798b9@27 6e728def-ac18-4b39-bad8-e7d984b3b6fa

JasonGross/gummi,JasonGross/gummi,JasonGross/gummi