deposit: record merge fix
deposit: record merge fix

* Fixes issue where edited records would be rejected by bibupload's
  revision verifier because the modification date in bibrec (used
  by records module) is not the same as hstRECORD (used by revision
  verifier).

Signed-off-by: Lars Holm Nielsen <7eaffca9f7cd98839b5821d0d23e09ff764b82cd@cern.ch>

inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit