This patch uses JS to add two links to the top of the checkouts
table: renew selected and renew all. Clicking each one submits
the respective form.
Also added is a small validation routine to warn the user if
they try to "renew selected" without having checked any boxes.
Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>
Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
