Bug 23855: Fix "Mark selected suggestion as" status

Bug 23855: Fix "Mark selected suggestion as" status

On the suggestions management page (suggestion/suggestion.pl) you can
select suggestions and change their status.
But it only works for "ACCEPTED" or "REJECTED".

Maybe caused by bug 22905.

Test plan:
Select at least one suggestion on the screen and select the "Pending"
status.
=> The status of the selected suggestions must have been updated

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 030eb694a87029e3220e8f930f509556c9e816ea)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>