Fix raceCachePath, racecache_path lingering typos

Everything across config, nascar-irc and nascar-stat-scraper should be
racecachePath now.
Remove redundant declarations in LeaderboardClient

The index declarations in LeaderboardClient were redundant, so removed
them. Also fixed that we were missing two re-initializers after last
cleanup.
Fix racecachePath being used in nascar-irc

Apparently missed on last commit... oops.
Fix type in Passings[0].AverageRestartSpeed check

The leaderboard sanity check message for
Passings[0].AverageRestartSpeed was reporting "BogusTest" failed.
Cleanup LapByLapClient and add sanity check

Minor clean up of
  - indentation
  - comments
  - info events
  - redundant early-declarations

Added sanity check to LapByLapClient to help makes sure we alert
the calling program if we're getting completely wrong output.

We still continue on gracefully.