Bug 37238: Add column configuration to item search results table

Bug 37238: Add column configuration to item search results table

To test:
1. APPLY PATCH
2. Do an item search that will return results.
3. To the right of the table notice thee Columns, Export, Configure buttons
4. Use the Columns button to hide and show various columns, make sure it works right.
5. Use the Export button to try and export the table in various file formats. You should only see visible columns in your export.
6. Go to Admin -> Table settings, make sure you can hide columns properly from there.

Signed-off-by: Sam Lau <samalau@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>