[EpgSelection] major code cleanup and optimisation.
[InfoBarGenerics] fix possible BSOD with DreamPlex..
openvix: build 570
[Translation] Updated DE, Thanks Ralf!
[skin] move embedded skins in python files into skin_default.xml.
[skin] fix build.
[EpgList] cleanup the REC/ZAP icons.
openvix: build 571
openvix: build 572
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/python/Screens/About.py
	lib/python/Screens/EpgSelection.py
	lib/python/Screens/InfoBarGenerics.py
	lib/python/Screens/PVRState.py
	lib/python/Screens/UserInterfacePositioner.py
	po/de.po