Bug 11876 - Add a diff view for staged MARC records.

Bug 11876 - Add a diff view for staged MARC records.

New patch should apply correctly.

	modified:   C4/ImportBatch.pm
	modified:   koha-tmpl/intranet-tmpl/prog/en/modules/tools/manage-marc-import.tt

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Bug 11876 - Diff column is now displayed.

If a match is found, a 'View' link appears in the Diff column.

Old patch was not implementing datatables, and therefore was not compatible with this version of Koha.
	modified:   koha-tmpl/intranet-tmpl/prog/en/modules/tools/manage-marc-import.tt
	modified:   tools/batch_records_ajax.pl

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
These patches have some issues but I'm going to submit a follow-up which
I think will address them all and offer some improvements as well.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>