Bug 17394 - exporting checkouts with items selects without items in combo-box

Bug 17394 - exporting checkouts with items selects without items in combo-box

In checkouts table, the is an export form (when some exports syspref are enabled).
When selecting some checkouts and selecting "ISO2709 with items" in export format combo-box, clicking on "Export" will select "ISO2709 without items" in the export format combo-box.
This is quite strange.
Its because the form as 2 inputs with same name and id "output_format" : an hidden input (the wanted arg for tools/export.pl) and a select (the export format combo-box).
So an action meant on the hidden input impacts the select.

This patch corrects by changing id and name of the export format combo-box : issues-table-output-format

TEST plan :
- Enable checkouts exports by setting syspref ExportWithCsvProfile with a profile
- Go to circ page of a patron with checkouts : /cgi-bin/koha/circ/circulation.pl?borrowernumber=xxx
- Show checkouts table
- Select some checkboxes in "Export" column
- Select "ISO2709 with items" in export format combo-box
- Click on "Export"
=> Without patch, the export format combo-box changes to "ISO2709 without items"
=> With patch, the export format combo-box does not changes
- Check the export file contains the items
- Check exports "ISO2709 without items" and "CSV" are OK

Signed-off-by: Jesse Maseto <jesse@bywatersolutions.com>
Signed-off-by: Katrin Fischer  <katrin.fischer@bsz-bw.de>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>