Tiers

![yay](https://f.cloud.github.com/assets/4504069/693507/881c9a90-dc8d-11e2-8bfb-28054cd4e010.png)

Various Server and Client functions now carry data involving the Tier of a battle, allowing:

- New "Tier" section of the "Battles" tab, which allows players to sort battles by Tier.
- Tooltips now display the Tier of the battle a player is involved in.
- Server now displays the tier of battles that start.

The mode information is also passed in channel battles & all now, protocol was defective but it's fixed now.