BatchUploader: _check_client_can_submit_file() return

* Corrects return value of _check_client_can_submit_file in
  case client_ip="" and webupload=1.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
OPS: re-enabling author-pages

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
BibMerge: bibmerge_engine.js missing comma

* Fixes a missing comma in bibmerge_engine.js leading
  to a syntax error.

Co-authored-by: Javier Martin Montull <javier.martin.montull@cern.ch>
Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>