global: Push to FTP server

* Pushes the output files of PoS, APS and CONSYN
  on DESY FTP server.

* Adds the location of the uploaded files on
  the reporting email.

* Refactors imports.

Signed-off-by: Georgios Papoutsakis<georgios.papoutsakis@cern.ch>
BibTasklets: Consyn harvest tasklet modified

* Adds parameter upload_FTP to determine whether
  the result files should be uploaded to the FTP
  server.

Signed-off-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>