Christmas stuff

Created by: Skullyton

Adds Christmas jumpers, santa hats (Not the space ready kind) and fixes the christmas cracker paper hat from having no worn sprite to having a silly worn sprite.

Also adds polar bears, snow crabs (Celts suggestion) and living gingerbread men (Thread suggestion)

Christmas jumpers, santa hats, festive wrapping paper, and christmas crackers can be bought from cargo via the "festive" crate under Hospitality.

Thank you to Celt for being my second opinion on the sprites.

Really shouldn't have left this so late.