Remove mark all present feature from events

Ghost User
2019-08-28T18:56:22+02:00

Closes #878 ### Short description Remove mark all present feature from events since this cannot really be used anymore due to the new payments system. It is broken in it's current form.

Closes #878 (closed)

Short description

Remove mark all present feature from events since this cannot really be used anymore due to the new payments system. It is broken in it's current form.