Bug 13731: Suggestions reason does not save on updating the status

Bug 13731: Suggestions reason does not save on updating the status

On the suggestion list view, if you set a status, it won't be saved.

Test plan:
1/ Create a suggestion
2/ Go on the suggestion list view (suggestion/suggestion.pl)
3/ Select a suggestion and marked it as "rejected" (or the status you
want) and choose a reason
4/ Save
5/ Browse you suggestions DB table (using your favorite MySQL CLI) and
verify that the "reason" field is correctly filled.

Works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as expected, thx!

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
(cherry picked from commit 45e5afb77b8185eda9151cde7943577201671d17)
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>