checkin before second dojo 2013
added Rikki's changes
ignore last year's stuff
add sizes to item
Improved ContainerItem, added exceptions and improved current room handling.

Added Exceptions.
Moved description handling into ContainerItem.
Checks capacity of ContainerItem when adding.
Moved current room tracking from Main to Player.
Moved 2013 dojo code to 2013 directory
Merge branch '2013'