Completely removed Qt3Support dependency

Cleaned up qmake project file
Compiles on Windows + many Windows specific improvements
Various small fixes

git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@152 b624d157-de02-0410-bad0-e51aec6abb33

src/forms/SimplePasswordDlg.ui

@@ -125,7 +125,7 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11" />
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
+ <includes/>
  <resources/>
  <connections/>
 </ui>