Backport r71394 and r17395 from trunk: bib_source selection in Vandelay

Backport r71394 and r17395 from trunk: bib_source selection in Vandelay

When importing a set of records from Vandelay, the bib source selection widget
on the Vandelay screen should actually affect the biblio.record_entry.source
value of the imported records.

We also pass the record types to the MARC editor from the Vandelay and
acquisitions interfaces, for however much good that does for us (not much
at the moment).

git-svn-id: svn://svn.open-ils.org/ILS/branches/rel_1_6@17403 dcc99617-32d9-48b4-a31d-7c20da2025e4