Bug 8256: Teach webservice to select reports by name

Bug 8256: Teach webservice to select reports by name

Adds the ability to pass a hash to C4::Reports::Guided::get_saved_report
which specifies a name or id to select the report.

Test plan:
1. Create a report (or choose an existing one), and mark it public
2. Run the report using the web service: [IntranetBaseURL]/cgi-bin/koha/svc/report?id=whatever
3. Confirm you get the expected results
4. Run the report by name using the web service: [IntranetBaseURL]/cgi-bin/koha/svc/report?name=[Report name] (keep spaces in the name)
5. Confirm you get the same results
6. Run the report using the public web service: [OPACBaseURL]/cgi-bin/koha/svc/report?id=whatever
7. Confirm you get the same results
8. Run the report by name using the public web service: [OPACBaseURL]/cgi-bin/koha/svc/report?name=[Report name] (keep spaces in the name)
9. Confirm you get the same results
10. Sign off

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
- Adding, editing and deleting reports works
- id parameter works
- new name parameter works
- public and non-public works

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>