It's beginning to look a lot like Christmas...[NEEDS MERGING ASAP]

Added Christmas trees everywhere.
Added a Pine Tree plant to Botany.
Made the Christmas event run for the month, because 90% of us will not be playing 2dspacemanvidyagaemz on Christmas eve/day.
Added a Traitor Item, the Rigged Present.
Changed how Presents work.
Fixed the space cash tree not being able to produce seeds.
SANTA OPS!!! http://i.imgur.com/iBcfevk.png?1

Pics of the new plant:
http://i.imgur.com/K9MqpBy.png?1

Yes, this is intended for Master branch, as it won't make it through the dev staging before Xmas is over. Which is why it's marked as needing merging asap. Gotta get this merged and live as soon as possible so we have xmas.