Bug 22150: Ability to select or unselect all member flags

Bug 22150: Ability to select or unselect all member flags

To test:
1) Find a patron
2) Click More -> Set permissions
3) Click 'Clear all', confirm all checkboxes get cleared and disabled
4) Click 'Select all', confirm all checkboxes get selected
5) Unselect one checkbox (not superlibrarian), and confirm that the
   superlibrarian checkbox also gets unselected
6) Confirm that saving still works as expected

Edit: Rebased by Owen Leonard

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>