Bug 31654: Hide non-public libraries from MastheadLibraryPulldown (bug_31654_hide_non...

Bug 31654: Hide non-public libraries from MastheadLibraryPulldown (bug_31654_hide_nonpublic_libs)

Do not list library in masthead and advanced search if branches.public is false

Test Plan:

* Set OpacAddMastheadLibraryPulldown to "Add"
* Go to Administration -> Libraries, edit "Fairfield", set "public" = "no" (at the end of the form)
* Or connect to DB and run
  update branches set public = 0 where branchcode like 'F%';
  This will set all three libraries starting with F to non-public
* open OPAC
* The "All libraries" Pulldown in the Header (between search slot and search button) still shows the non-public libraries
* Go to OPAC -> Advanced Search, scroll to "Location and availability": The selectbox still shows the non-public libraries

Now apply the patch

* Open OPAC
* The "All libraries" Pulldown in the Header now should not contain the libraries set to "public = no"
* And in the Advanced Search "Location and availability" pulldown those libraries should also not be shown.

Sponsored-by: Steiermärkische Landesbibliothek
Signed-off-by: Claude Demeure <claude.demeure@mailo.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>