removed arrayhelpers + moved venue-filter (Eventslistmodel), FIX #774
Fix #773: Mailer no subject on category emails
Merge branch 'master' of https://github.com/jemproject/JEM-Project
Help: plugin description corrected (issue #549)
Merge branch 'master' into development
mod_jem: more options to decide which events are shown (#776)

- additional type "unfinished" which checks enddate/endtime
- added back offset (in hours)
- no enddate uses startdate
- no endtime uses "23:59:59"