…ault auth mechanism (#1013)

* Implement basic auth

* Remove default token-based auth mechanism from api-configuration module

* Update changelog

* Fix compiling and test failures

* Fix checkstyle remarks

* Add auth-tokenbased module as test dependency to data-management modules

* Implement BasicAuthCredentials

* Add missing test regarding missing colon in bearer token

* Fetch passwords from vault instance

* Allow all requests if no AuthenticationService is registered

* Remove dependency where it is not needed

* Revert basic launcher

* Update api-configuration module docu