BibEdit: only notifications on error
BibEdit: only notifications on error

* Uses the new parameter available in BibTask to *only* send e-mail
  alerts if the upload task fails.

Signed-off-by: Jan Aage Lavik <8d55e006a1b29770f275a5c59a7341f17f8e69d5@cern.ch>

tiborsimko/invenio,inveniosoftware/invenio,tiborsimko/invenio,inveniosoftware/invenio