Merge pull request #39 in ASAPO/asapo from feature_query-images to develop

* commit 'e3c37000':
  added order by statement
  added integration tests for user metadata
  do not use put_time
  do not use get_time
  convert time functions
  parse broker response into fileinfos
  fix
  fix
  refactor worker errors
  started working at broker
  finished broker
  more work at SQL parsing
  finished for comparison operator
  parse simple queries
  work ar sql parser
  started working at broker