User Story: notify user about succesfull deletion of threads

[DasUnicorn]

Dependencies:

• 2

• 38

Description Of Service Or Screen: N/A

User Objective: As a user, I want to be notified that my content is deleted on my request, so that I can be sure.

Acceptance Criteria:

• user gets notified after deletion

[DasUnicorn]

Testing: user gets notified after deletion --> done