FIX: group user count was busted

db/migrate/20150325183400_fix_group_user_count.rb

@@ -0,0 +1,5 @@
+class FixGroupUserCount < ActiveRecord::Migration
+  def change
+    execute "UPDATE groups g SET user_count = (SELECT COUNT(user_id) FROM group_users gu WHERE gu.group_id = g.id)"
+  end
+end