Added Stats.
sStats.lua handles all database functionality (work in progress).
Stats currently tracked:
   All player finishes/DNFs, which are used to get course records.
   Course play count.
Stats debug mode logs to Stats.log.

Client:
Added timers and course record to race GUI.
DrawText now draws vertically centered text.

Shared:
Utility.LapTimeString can return "N/A".
Merge branch 'master' of https://github.com/dreadmullet/JC2-MP-Racing