Allow event cancellations when member has a fine

Ghost User
2018-05-16T19:02:36+02:00

Closes #627

#### Previous behaviour
Steps to reproduce:

1. Register for an event
2. Get a fine
3. Can no longer cancel the registration created in step 1.

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

1. Register for an event
2...

Closes #627 (closed)

Previous behaviour

Steps to reproduce:

1. Register for an event

2. Get a fine

3. Can no longer cancel the registration created in step 1.

New behaviour

Steps to validate that it works:

1. Register for an event

2. Get a fine

3. Can still longer cancel the registration created in step 1.