Resolve "Creating an event without specifying time crashes the request"

Luko van der Maas
2018-03-28T19:45:32+02:00

Closes #609

#### Previous behaviour
Steps to reproduce:

1. Create an event with all field filled in except for the time of the start of the event and the end of the event
2. Click save
3. Server crash

#### New behaviour
Ste...

Closes #609 (closed)

Previous behaviour

Steps to reproduce:

1. Create an event with all field filled in except for the time of the start of the event and the end of the event

2. Click save

3. Server crash

New behaviour

Steps to validate that it works:

1. Create an event with all field filled in except for the time of the start of the event and the end of the event

2. Click save

3. No crash but an error for the user