Third Uniform Color + other tweaks

Couple additions:

• Added a third jersey color to complement the two team colors. Playing at home will add stripes of the secondary color on a white uniform, while playing as a visitor will add white stripes on the primary/secondary-colored uniform
• Improved obstacle avoidance so players will be less likely to get stuck
• Disabled the Spectator camera for now; analytics showed that some players were stuck in Spectator mode and didn't know how to exit
• Improve sprite animations update (they would only update every 0.25s so it looked weird sometimes)