fixing bug with huntbot giving incorrect xp to pets on both teams

[sfk-steelsong]

pet xp rewrite, now it all goes through petUtil and properly handles active / inactive team

[sfk-steelsong]

Honestly, after looking at this again, I'd prefer to simplify the logic to make it easier to understand:

1. catch up xp applies to everything (hunts + huntbot) instead of just battles
2. show catch up xp multiplier on the team view
3. inactive team still gets half xp (and no bonus xp from battles ?)

Right now, this replicates the current logic across all 4 sources of xp (hunting, huntbot, battling manually, and your team being encountered in a battle), but I think that'd make things simpler to understand for users and can make that change if you're interested.