Bug 23596: Edit suggestion's reason when receiving

Bug 23596: Edit suggestion's reason when receiving

This patch displays and let the librarian edit the suggestion.reason
information when receiving an order.

Note that if no reason was given the edit is not possible (easily
modifiable if needed but it seems that we do not want to display too
much details unnecessarily)

Test plan:
- Create a suggestion and fill the reason
- Create an order from this suggestion
- Close the basket and start receiving the order
=> The reason is displayed and editable
- Modify the reason and click Save
- Receive again
=> The reason has been correctly modified
- Play with the "Others..." option and give a specific reason

Sponsored-by: BULAC - http://www.bulac.fr/
Signed-off-by: Séverine QUEUNE <severine.queune@bulac.fr>
Signed-off-by: Bouzid Fergani <bouzid.fergani@inlibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>