Fixed RealmServer Crash.
Core/Auth Response Codes: Doing some rework on them. Commented out the ones that are not currently listed or not scripted yet in the core. Updates on these will be done one by one.
Fixed the Group Size.

Normal Group has 5 players
Raid Group has 40 max players
*TODO: Fix Sub Group size between normal & raid group.
Merge pull request #65 from Haruhi2013/Group-Rework

Fixed the Group Size