Bug 29002: Match select2 patron format to patron_autocomplete

Bug 29002: Match select2 patron format to patron_autocomplete

This still needs a little work to fully match, but is getting close now.

I'd love to convert the existing autocompletes to select2 styling
instead actually.. maybe convert the select here to patron_autocomplete
and then work on a patch to convert patron_autocomplete to a select2
implimentation.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Janet McGowan <janet.mcgowan@ptfs-europe.com>
Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Laurence Rault <laurence.rault@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>