SimpleMachines/SMF2.1 — pull request #497 by ziycon (2013-07-05 08:47:12+00:00)
Title: Accounting for zero being a valid group

Signed-off-by: ziycon
#285
Change to allow zero as a valid group, change as per spuds commit on https://github.com/elkarte/Elkarte/issues/248.