[ZapHistory] move zap history screen into ChannelSelection, also fix history so when you goto a history point and then zap to a new channel the history after that point is cleared and the new zap is added to history.
remove duplicate imports.
[PermanentTimeShift] first recode for better skipping of TimeShiffed events. < > button's can now also be used to skip events when in a timeshift state. (may require more Debugging and tweaking)
openvix: build 654
Merge branch 'master' of git://github.com/OpenViX/enigma2

Conflicts:
	ChangeLog
	data/keymap.xml