Merge pull request #80 in ASAPO/asapo from feature_ASAPO-104-beamlinemap to develop

* commit '5b8bd3b1':
  docs
  fix logic, update tests
  add integration test, compare beamtimes between two authorizations
  receiver sends reauthorization error
  beamline authorization, receiver folder returned by authoritzation server
  fix auth tests
  fix SourceCredentials constructor
  update authorize service for new format
  add beamline to source credentials (c++), producer retries on reauthorization error
  refactor authorization