Bug 8421 : Added a URI filter to encode a cardnumber for borrowers as to not break...

Bug 8421 : Added a URI filter to encode a cardnumber for borrowers as to not break patronimage.pl

To Test:

Add a + (or any char that would need to be encoded) to a card number of a patron with an image attached.
Go to member/moremember.pl.
If the patrons image is there, you are golden.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
(cherry picked from commit c6e83d1156cc0ac2d2d299df43cc57a31e2249ef)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>