Begin of the insertion###End of the insertion **Todo**

* introduce new authentication layer that is to be used in commands/queries Begin of the insertion

End of the insertion Begin of the deletion
End of the deletion * reduce oauth backend authentication (token refresh, etc.) functionality in connection manager Begin of the insertion


### QA

* IMHO no dedicated QA needed, as smoke testing will eventually surface errors, which might be introduced by all those changes to queriesEnd of the insertion