Adds new endpoints for GET /friend/incoming and GET /friend/outgoing.
Refactor notifications module into its own pacakge.
Inject notifications module into friends module.
Adapt  and extend unit tests to new behaviour.
Co-authored-by: Max Granzow, Antonia Wuest

By default, jwts can be refreshed until 1 year after initial issue.
This commit will extend the lifespan for the test-jwt by setting
the initial issue date to some time in the future.

Julien Schröter authored May 24, 2021 and Julien Schröter committed Jun 17, 2022

This reverts commit eb26a8a2

As suggested by the new App concept.
https://confluence.akamu.de/display/WIKI/App+Konzept

Frederik Wegner authored Mar 30, 2021 and Julien Schröter committed Jun 17, 2022

Remove Level from awards struct as it can be inferred from experience. Rename useranswer to progressUpdate in api spec. Fix bug: new avatars not in awards.