Bug 11768: Show patron cardnumber in OPAC personal details

In previous versions of Koha, the patron cardnumber was displayed in the
personal details section of the OPAC for logged in users. A patron needs
to be able to access his or her cardnumber in some cases to access
online resources a library makes available that requires his or her
cardnumber. This is especially important for patron self registration
where a patron may not have a physical library card. This field should
be re-added to the patron personal details page.

Test Plan:
1) Apply this patch
2) Log into the OPAC
3) Browse to "your personal details"
4) Verify the patron cardnumber is visible

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Restores cardnumber on personal details tab in OPAC for
prog and bootstrap theme. Passes all tests and QA script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 2345dc12d8cd6f80164fce3a2a846613da44fc50)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>