Don't destroy Notifications service on destruction of the Notifications directive

Steps to reproduce

Steps to reproduce:
1. Apply https://opencast.jira.com/browse/MH-13312
2. Start adding a new scheduled events that generates scheduling conflicts and quit the Add Event Wizard by left-clicking the 'x'
3. Start adding a new scheduled event that generates a conflict

Actual Results:
The conflict notification is not displayed anymore (the table listing the conflicts is displayed)

Expected Results:
The conflict should be displayed

Workaround (if any):

Assignee

Unassigned

Reporter

Sven Stauber

Severity

Incorrectly Functioning Without Workaround

Tags (folksonomy)

None

Components

Fix versions

Affects versions

Priority

Minor
Configure