Updated renamer functionality, fix window bug.

The renamer window was popping up ouside of screen when cursor was close to
the edge. Fixed with offsets so window will never be outside of the screen.

Addded:
	- Renamer autocompletion.
	- Session name saver

Bug fix:
	- window popping up outside of screen.
Cleanup done on script added selection feature, bug fix

The script has been cleaned up for release and added a select feature.
Some minor bug fixes has been performed.
Added new feature: FitTumpleSelection