- Add hotkeys for snap left/snap right, kwin won't need a seperate hotkey for snap up, as maximize will do that job for us, and it already has a hotkey
- Add geometry restoring to quick tile, meaning that windows can be moved back to their original state after a tile, useful if just looking at something quickly.
Thanks to mgraesslin for review and lots of mentoring.
svn path=/trunk/KDE/kdebase/workspace/; revision=1022987