make resque worker function on non-multi-coop-installs too

app/workers/user_notifier.rb

@@ -4,7 +4,7 @@ class UserNotifier
 
   # Resque style method to perform every class method defined here
   def self.perform(foodcoop, method_name, *args)
-    FoodsoftConfig.select_foodcoop(foodcoop)
+    FoodsoftConfig.select_foodcoop(foodcoop) if FoodsoftConfig[:multi_coop_install]
     self.send method_name, args
   end
 
@@ -40,4 +40,4 @@ class UserNotifier
       end
     end
   end
-end
+end