Bug 12833: Patron search should search on extended attributes

Bug 12833: Patron search should search on extended attributes

Before Bug 9811, the patron search searched on extended attributes.

This patch restore this behavior.

Test plan:
0/ Create a patron attribute PA
1/ Create a patron A (cardnumber CNA) with PA="foo"
2/ Create a patron B (cardnumber CNB) with PA="foo bar"
3/ Search for CNA should redirect on the patron detail page.
4/ Search for "foo" should display the search result with 2 results.

Signed-off-by: Nick Clemens <nick@quecheelibrary.org>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
'Searchable' patron attributes can now be searched for again.
Works as described, passes stests and QA script.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>