Added blue/yellow disambiguation hack for RC2013.

Turned off line detection for RC2013

All hacks, sooooooo many hacks!

Signed-off-by: Shannon Fenn <shannon@slinbox.(none)>
Change green horizon to be put at the base of the image if not enough points are found, rather than at the top - prevents spurious balls.

Signed-off-by: Shannon Fenn <shannon@slinbox.(none)>
Merge branch 'develop' of git@github.com:nubots/robocup.git into develop