Implement transfer to GoogleCloud-bucket

[DataSpott]

• Add option-box to transfer files into a google-cloud bucket instead to the server:
  • implementation of gsutils in conda
  • addition of checkbox
  • connection-test
  • command for upload to bucket
  • solution for authentification (json-key-file & service-account)

[replikation]

gsutil -o "GSUtil:parallel_process_count=8" -o "GSUtil:parallel_thread_count=1" \
       -m rsync -j .fastq -c LOKAL-DIR/ gs://BUCKETNAME/DIR/