Icon support

Credits to Marius Muja <mariusm@cs.ubc.ca>
Dont manage desktop window

Credits to Marius Muja <mariusm@cs.ubc.ca>
Handling _NET_WM_STATE_STAYS_ON_TOP window state (popups from knotify, krunner, networkmanager, panel configuration and alike)

Credits to Marius Muja <mariusm@cs.ubc.ca>
Merge branch 'kde-master' into all-master
Merge branch 'icons-master' into all-master