Bug 26597: (Fix) remove REST API call and retrieve the patron's data from borrower_da...

Bug 26597: (Fix) remove REST API call and retrieve the patron's data from borrower_data input

This patch remove the REST API call in select_user function and retrieve the patron's data from borrower_data

To test:
1) Apply patch
2) Search PrefillGuaranteeField preference and make sure some fields are selected
3) Select a user that can have a guarantor
4) In the edit form, click on "Search to add" in "Patron guarantor" fieldset
5) Choose a patron who has at least one of the fields in 1) set
6) Click Select
7) Confirm guarantee's information is filled from the guarantor's record
8) Check that any preexisting information is not overwritten

Signed-off-by: Emmi Takkinen <emmi.takkinen@koha-suomi.fi>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>