Listen on low so that other plugins could hook into before

This is necessary if you want to do something like automatic completion
of the sign for group/bank accounts.

src/main/java/com/Acrobot/ChestShop/Listeners/PreShopCreation/NameChecker.java

@@ -19,7 +19,7 @@ import static com.Acrobot.ChestShop.Events.PreShopCreationEvent.CreationOutcome.
  */
 public class NameChecker implements Listener {
 
-    @EventHandler(priority = EventPriority.LOWEST)
+    @EventHandler(priority = EventPriority.LOW)
     public static void onPreShopCreation(PreShopCreationEvent event) {
         handleEvent(event);
     }