Bug 18044: Label Batches not displaying

Bug 18044: Label Batches not displaying

SQL expects lists to be comma separated. A trailing comma must also
be avoided.

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 544cf17d6f3279d95835ba42d40d49982e97f0a2)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
(cherry picked from commit b61ff540611f0dfd28dd7818dc1d03062cb4c159)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>