Bug 9067: Hide item related strings when importing staged authority records

Bug 9067: Hide item related strings when importing staged authority records

On importing authority records, the items related string should not be
displayed.

Test plan:
1/ Import an authority record
2/ Confirm the item related string are not displayed.
3/ Before this script, the record_type param was lost just after
importing the records. Now you should see
"Processing authority records" of "Processing bibliographic records" in
the "MARC staging results"
4/ Revert the import and check there is not item related strings.

No behavior should exist on importing bibliographic records.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>