Update all plugins to conform to Rubocop.

data/plugins/navigation/door/door.rb

@@ -1,3 +1,4 @@
+
 java_import 'org.apollo.game.action.DistancedAction'
 
 # A distanced action which opens a door.
@@ -13,20 +14,20 @@ class OpenDoorAction < DistancedAction
 
   def executeAction
     mob.turn_to(@door.position)
-    DoorUtil::toggle(@door)
+    DoorUtil.toggle(@door)
     stop
   end
 
   def equals(other)
-    return (get_class == other.get_class && @door == other.door)
+    get_class == other.get_class && @door == other.door
   end
 
 end
 
 # MessageListener for opening and closing doors.
 on :message, :first_object_action do |player, message|
-  if DoorUtil::is_door?(message.id)
-    door = DoorUtil::get_door_object(message.position, message.id)
+  if DoorUtil.door?(message.id)
+    door = DoorUtil.get_door_object(message.position, message.id)
     player.start_action(OpenDoorAction.new(player, door)) unless door.nil?
   end
-end
+end