Bug 33445: Pass through form info if present and use record values otherwise

Bug 33445: Pass through form info if present and use record values otherwise

This patch updates the form to pass through values formthe form when searching, and
to use record values if nothing is passed in.

TO test:
 1 - Without the patch, edit a personal name authority record
 2 - Replace 100 subfield a (200 subfield a for UNIMARC) with your own name
 3 - Click "Replace record via Z39.50/SRU search"
 4 - Note that prefilled search field contains the original value, not your name.
 5 - Replace the Author (personal) field with your name in the search form
 6 - choose a search target, and click Search.
 7 - Note that the results of the search are for the original value, not your name
 8 - From the details page of a record, click 'Edit -> Replace record via Z3950'
 9 - Note form is prefilled
10 - Change value as in 5 and search
11 - Note original term was searched
12 - Apply patch, restart all
13 - Repeat searches as before
14 - Confirm that form is prefilled with record or the updated value
15 - Confirm your entered search terms are always searched

Signed-off-by: Phil Ringnalda <phil@chetcolibrary.org>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>