Bug 35044: Update: Serial subscriptions

Bug 35044: Update: Serial subscriptions

Test plan, k-t-d:

Preparation: Create additional fields for table 'subscription', visit:
/cgi-bin/koha/admin/additional-fields.pl?tablename=subscription

2 text fields, one repeatable, one not-repeatable
2 AV fields, one repeatable, one not-repeatable
2 MARC fields, one 'get' and one 'set', both non-repeatable, MARC field
942$c
Attempt to create a repeatable MARC field (get or set). Notice you're
unable to.

1) Add a new serial subscription, visit:
/cgi-bin/koha/serials/subscription-add.pl
2) Set the mandatory "Record" input (e.g. '112'). Click the 'Next' and
   press 'Ok' on the alert box.
3) Fill in all required fields and press "Test prediction pattern"
4) At the bottom, fill in all additional fields, click the '+New' and
   'Clear' links,  hit 'Save'
5) Notice the fields are shown, repeated fields are comma separated
6) Click Edit -> Edit Subscription, repeat steps 4 and 5
7) Go back to subscription additional fields, set all fields as
   searchable
8) Visit serials-home: /cgi-bin/koha/serials/serials-home.pl
9) Click 'Search'
10) Notice the searchable fields now show in their columns, repeated
    fields separated by comma
11) Perform a search using a repeatable field, verify it all works as
    expected.

-- Subscription Claims --

Preparation:
1) Define a new claim notice, visit:
/cgi-bin/koha/tools/letter.pl?op=add_form&module=claimissues
2) Input code, name, click "Email" set a "Message subject" and put
   something in the message body. Hit 'Save'.
3) Set a serial as late, visit our original subscription:
/cgi-bin/koha/serials/serials-collection.pl?subscriptionid=1
4) Click "Edit serials" and status -> "Late". Hit "Save".
5) Link the original subscription to the existing vendor, visit:
/cgi-bin/koha/serials/subscription-add.pl?op=modify&subscriptionid=1
6) Click "Search for a vendor". Hit "Ok". Hit "Choose". Save the
   subscription.

Claims:
7) Visit claims:
/cgi-bin/koha/serials/claims.pl
8) Click "Ok"
9) Verify that searchable additional fields all have their respective
   column. Repeated fields are shown comma separated.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>