- Fixed bugs in showing title bar Context Menu;
- Fixed bugs in setting user colors.
- Removed all transparency related code from MultiLayer class, since this is now handled by Qt (this fixes the black background issue when moving plots).
- Added PDF export option and fixed EPS export (they should be handled in a single "exportVector" function)
- Added support for using the QAssistant as a help browser and improved the ApplicationWindow::showStandAloneHelp() function.