[DEV] Implement RewardXpToTeam.

Signed-off-by: Salja <salja8840@gmail.com>
[DEV] Implement Conquest Points Week Cap Scaling, "SMSG_PVP_REWARDS"

NOTE:
  * Fix XP Gain in BattleGrounds
  * Fix Random BattleGround Rewards for Level´s < 85

Signed-off-by: Salja <salja8840@gmail.com>