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>
BibTasklets: consyn DB removal
BibTasklets: keep one folder only

* Does no longer create work folders for CONSYN harvest.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
BibTasklets: CONSYN search fix

* When looking for DOI in the database, do not search
  when there is no DOI found. Otherwise all records are returned.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>