Added bucket lid sprite and functionality

Buckets can be lidded, however there is no change in the sprite when
this happens. This adds a lid and it's functional in game.

No lid vs. lid:
![ss 2014-04-22 at 01 59 34](https://cloud.githubusercontent.com/assets/2666891/2762956/91b95eaa-c9fc-11e3-8966-9f4b49318e9a.png)