Bug 7175: Allow to choose which items to receive

Bug 7175: Allow to choose which items to receive

If AcqCreateItem=ordering, when you receive an order, you now have a
list of all created items and checkboxes that permit you to choose which
items you want to receive.
A 'Edit' link open additem.pl page in a popup to allow you edit the
items before receiving them (popup is automatically closed after
modification, and items table is automatically updated)
If quantity is set manually in the text box, the appropriate number of
checkbox are checked from top to bottom and a warning shows up if
quantity is greater than order quantity

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>