Inf: fixed score restoring
Inf: removed old levels screen code.
Inf: issue #216 fixed, now chunk size determined from weighted probabilities of 2-10 chunks.
Bug fix: no longer send a blank data point at the end of a chunk.
A new game now resets the Round number to 1, instead of 1 larger than the last round of the old game.
Merge branch 'master' of github.com:serg-srri-umass/TP-data-games