Added the ability to stop searching early if we are confident that the best move is better
than the 2nd best, and to think longer if we aren't confident.

We also used Kevin Wayne and Robert Sedgewick's Gaussian class (with permission) to determine
our confidence levels.
Added tests for time management heuristics, and a simple experiment for the confidenceless and confidencemore heuristics.

Also, if confidenceless is not turned on, TimePlayer will not divide its thinking time into slices.
Merge branch 'time_mgmt2' of git@github.com:Orego/Orego into time_mgmt2_experiment

Conflicts:

	src/orego/experiment/ExperimentConfiguration.java