ParentalControl: Small improvement regards pin code notification

As suggested by Dima73
InfoBarGenerics: Introduce a new timeshift live screen

Skinners are now able to create a different screen/message when timeshift
is in the livemode instead of the standard timeshiftstate screen
Merge remote-tracking branch 'pli/master' into beta

* pli/master:
  InfoBarGenerics: Introduce a new timeshift live screen
  ParentalControl: Small improvement regards pin code notification