Reference Lap/Time graph/Race Session editing

1) Added a Reference Lap graph display option
2) Improved TIME graph display so no Text details show up whenever X-axis is TIME
3) Added Race Session merging initial code
4) Version 2.003.0013
Second attempt at MergeLaps coding, will not compile.

"MergeLaps() is undefined" error in DlgRaceSelectEdit.cpp
Another attempt at database editing - will not compile

Inaccessible ExecuteSQL error
Cleaned up as much as I can, still error with ExecuteSQL()
Merge Race Sessions fixed

- Still need to complete confirmation dialog box
Race Session Merging complete, with confirmation dialog
Renaming of Race Sessions - Compiles but loses edited race sessions

Need to confirm SQL statement concatenation is correct.
Race Session renaming coding complete, 2.003.0014
Minor optimization of dialog positions
Added sort Lap List  by Laptime, minor guideline improvements
Added Help File and ShellExecute code to Pitside 2.003.0016
Added constant G circles for Traction Circle graph, 2.003.0017
Minor tweak to Traction Control graph, Help file update.
Fixed PlotPrefs, generalized Traction Circle coding
Added error check on Help ShellExecute command
Update to Help file
Merge pull request #22 from KDJones2/master

Race Session Merging/Reference Lap display options added