deposit: autocomplete deprecation fix
deposit: autocomplete deprecation fix

* Fixes backwards incompatible change in deprecation of
  WebDepositField.autocomplete which broke existing autocomplete
  functionality.

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

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