add property for regex that may not apear in event description
There are some "fix-time-places" in german tv, where they introduce movies.
So I'd like to create an entry for automatic recording for this timeslot and add a regex, that I don't want to record the movie, when it was produced in germany - means don't create a timer, when the pattern matches somewhere in the event description.
Such a pattern might look like "[Dd]eutsch(?:er?|land)"