Bug 25879: Improve display of guarantor information in the patron entry form

Bug 25879: Improve display of guarantor information in the patron entry form

This patch makes some changes to the patron entry template to improve
the display of guarantor information.

To test, apply the patch and locate a patron with a "Child" type
category.

 - Edit the patron's record
 - Under "Guarantor information," click the "Search to add" button.
 - Search for and select a patron.
 - The guarantor information should be added to the patron edit
   form. The information should be correct and well formatted.
 - Click the "Remove" link. The guarantor information should be
   removed.
 - Search for an select a guarantor again and save the record.
 - Edit the patron record again. The saved guarantor information should
   look correct.

Looks great!

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>