Bug 5349: add ability to transfer order lines from one basket to another

Bug 5349: add ability to transfer order lines from one basket to another

On basket.pl and parcel.pl there is a 'Transfer' link which allow you to
transfer order lines from a basket to another.

The link leads to a new page which allow you to search for a bookseller,
then display this bookseller's baskets. Then you can pick a basket and
the transfer will be done.

Signed-off-by: Marc Veron <veron@veron.ch>
Signed-off-by: Mathieu Saby <mathieu.saby@univ-rennes2.fr>
Signed-off-by: sonia <koha@univ-lyon3.fr>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>