Implemented stylesheet version control. style.qss now overwrites on
release, the old file goes to 'style.qss.old'. Version in bitcoingui
should be iterated every qss release.
Style definitions for Bitcoinamountfield widget
Merge commit '41d6df009bed0d23323c86784750bbdae1ccf3d5' into 1.4.3.2

* commit '41d6df009bed0d23323c86784750bbdae1ccf3d5':
  Style definitions for Bitcoinamountfield widget
  Implemented stylesheet version control. style.qss now overwrites on release, the old file goes to 'style.qss.old'. Version in bitcoingui should be iterated every qss release.