Add own menu entry for notifications

This menu entry should include a badge which show the amount of unread notifications.

added part::frontend type::feature labels

We are currently looking into django-notifs:

https://github.com/danidee10/django-notifs

assigned to @nik

unassigned @nik

assigned to @hansegucker

created merge request !447 (merged) to address this issue

mentioned in merge request !447 (merged)

closed with merge request !447 (merged)

mentioned in commit 503b8818