Contribute/Bugsquad/BugDays/KWinDay1/Bugs to be marked as INVALID

A bug is INVALID if it describes desired behavior, or something that isn't a bug.

bug #160344 - If desktop effects are enable, it is repainted. If they're not, nothing kwin can make. Jtamate
bug #145857 - SGI Widget style is unmaintained. FiNeX
bug #133179 - Not a bug. IMHO the behaviour is correct. The second time you click on the mp3 file, The command called for reproduce it doesn't start a new audacious/xmms istance but it append the file on the playlist so keeping the focus on the file manager should be correct FiNeX