hygiene - forgot console.log *oopsi*
Merge pull request #523 from NicoleRauch/master

Aktivität kann jetzt eine Warteliste bekommen - Interessierte können sich selbst dort eintragen.
Merge commit '00537b0c6eea236bc5bb9b6289d53d343b936d62'
hot fix for gdcr display
forgot to remove debug outs
sends email now on waiting list activation
Merge pull request #524 from leider/master

sends email now on waiting list activation
resources cleanup (internal)
removing forgotten paranoia check
removed initialization b/c no longer useful
Merge pull request #525 from leider/master

resources cleanup (internal)
changed text for sending registration mails to waiting members - removed ‚erneut‘
sending mail without specifying the sender does not show „undefined via softwerkskammer.org“ anymore
Merge pull request #526 from leider/master

minor changes in sending mails
renamed: withWaitinglist to hasWaitinglist
renamed: registrationOpen to isRegistrationOpen
waiting list now stored in resource (step 1)
waiting list addition moved to resource instead of „old“ waiting list
waiting list is now read from activities (step 2)