Bug 8868: ILS-DI: CancelHold needs to take a reserve_id

Bug 8868: ILS-DI: CancelHold needs to take a reserve_id

CancelHold takes two parameters: patron_id and item_id.
If item_id is considered as an itemnumber, holds on title can't be
canceled.
If item_id is considered as a biblionumber, all holds on this
biblionumber (for a borrower) will be canceled.

So CancelHold have to consider item_id as a reserve_id.

- Added subroutine C4::Reserves::GetReserve
- C4::ILSDI::Services::GetRecords now returns the reserve_id
- Fix the text in the ilsdi.pl?service=Describe&verb=CancelHold page
- Unit tests for CancelReserved and GetReserve
- Do not delete row in reserves table if insert in old_reserves fails

Signed-off-by: Leila and Sonia <koha.aixmarseille@gmail.com>
Signed-off-by: Benjamin Rokseth <bensinober@gmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signing off, while noting a style issue in the patch review

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes tests and QA script.
Placed and cancelled a hold using ILS-DI successfully.
Adding a follow-up to also update the ils-di documentation
page in the bootstrap theme.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
EDIT: I removed the changes it did to the prog theme.