Allow filtering shifts by name

[Centzilius]

Hi,
it would be nice if we could filter shifts by name. At 37C3 there have been multiple angel shifts at the location Cash Desk and it would be nice to only see the "Cash Desk" shifts and not the Access Control or Crimping shifts. (Or Evacuation helpers in Haal 1)

[MyIgel]

That would be indeed a good idea (in that case more: Filter shifty by shift type as name can be changed from shift to shift and thus is not a great grouping option).
The problem with that is that it would confuse users of the engelsystem even more when seeing the option on the shifts page so would be part of some "advanced options" view which should be implemented at some point