Bug 12525: FIX patron lists dropdown is empty

Bug 12525: FIX patron lists dropdown is empty

On the patrons home page, the dropdown list is not populated.

Test plan:
1/ Go on the patrons home page (members/members-home.pl)
2/ Launch a search
3/ The dropdown list close to "Add selected patrons to" should contain
all your patron lists

NOTE: Initially tested with both which created lists.
      git reset --hard origin/master
      And then dropdown list was missing them.
      Applied just this one, and they were listed.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>