A substantial change to mouseTrackerKF.m.  The kalman filter part is gone, though it was functionally gone before.  The findNose method now finds those frames where there is blob a threshold distance away from the identified tail (along the tail-body vector), then uses those frames as seeds to propagate the nose position backward and forward.  Seems to work just as well as the old for the tested videos, and is much cleaner.  Also should be better for other vids where the blob loses criterion but is still ID'd as the same.
Big commit.  Substantive changes to tracking algorithm.  Also many additions to the reviewTracking program.