Fixed KeyError: 'delete_selected'

Ghost User
2020-01-08T22:43:53+01:00

Closes #992

#### Previous behaviour
Steps to reproduce:

1. Try to delete an event by a user without the right permissions.

#### New behaviour
Steps to validate that it works:

1. Event can be deleted.

Closes #992 (closed)

Previous behaviour

Steps to reproduce:

1. Try to delete an event by a user without the right permissions.

New behaviour

Steps to validate that it works:

1. Event can be deleted.