Fixed the moving around of the InfoPanel on non KDE enviroments.

This patch restores the ability to move the info-overlay panel on the
profile. For some reason the eventFilter wasn't working (and actually,
looking at the code, it really shouldn't, because I didn't see where I set
it to work, maybe someone (me) broke it a long time ago) well, it seems
fixed now at least. :)

Tested on XFCE, Gnome and KDE, with three different window managers.

[Dirk Hohndel: removed debug output]

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>