Made the clown's waterflower a child of spraybottles rather than having its own snowflake spraying code. As a result, clowns can refill the flower with anything and spray a single unit of reagent at people. Pepperspray is a good one. Honk honk.

Fixed "you empty the the spray bottle" message.
Merge pull request #1188 from MrPerson/waterflower

Made the clown's waterflower a child of spraybottles