Bugfix Release

This release includes a bugfix for "Maintain System" and "Fix Pacman Errors" options in which, especially noticeable in KDE, required files in /tmp/ directory got deleted. Now, only files created by PacUI (which name starts with "pacui*") get deleted.

This bugfix prevents unexpected system behavior.

Some minor improvements for PacUI used by tiling WMs and general code and comment cleanups are included, too.