Bug 14753 - Use columns configuration for checkins table

Bug 14753 - Use columns configuration for checkins table

This patch adds the ability to configrue the visible columns on the
check in screen.

To test with both patches:
1 - Check in an item
2 - Note there is no 'Date acquired' column
3 - Apply  patches
4 - Note there is still no 'Date acquired' column
5 - Note that there is now a "Show / hide columns" button
6 - Verify that you can check the box and view the 'Date acquired'
column
7 - Verify that showing/hiding columns works (it will not carry over
        between items due to page reload)
8 - Verify that changes from the 'Configure columns' section of
Administration hold between checkins

Sponsored by: North Central Regional Library (ncrl.org)

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com