Bug 10854: add ability to export serial claims using CSV profile.

Bug 10854: add ability to export serial claims using CSV profile.

Test plan:
- Create a CSV profile (or use the default one) with a type 'sql'.
- Go to serials/claims.pl, select the wanted CSV profile and click on
  the "Export selected items data".
- Verify the CSV file is correctly generated.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Work as described. No koha-qa errors

On top of 10853 (solving merge conflict)

Need to do homework to test. Add subscription and serial claim
notice.

1) Create a new CSV profile, type SQL, copy sample fields
2) Go to claims, select vendor
3) Go to Export selected items with created profile
4) CSV (in my case I use | as separator) download successfully
5) All fields present, file correct

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script.
Works as advertised, keeps existing format by porting it to
a SQL profile.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>