BibUpload: do not always process MoreInfo
BibUpload: do not always process MoreInfo

* During FFT elaboration, MoreInfo processing is not done if
  BibDoc's have been deleted/expunged/purged. This avoids getting
  an error when using bibdocfile CLI to delete BibDocs.

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