Bug 15928 - Show unlinked guarantor

Bug 15928 - Show unlinked guarantor

To test:
1 - Add guarantor data to patron account by typing it in but do not 'Set to patron'
2 - Note it is not displayed on patron details
3 - Apply patch
4 - Note the info is displayed
5 - Test that linked guarantors show as expected

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Amended-patch: Correct some indents/spaces

Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com