george/prediction_tracker: Manage and score predictions on arbitrary topics. @ 3b8fae716c474ace1512903f6aeef7997d09e3d8

George C. Privon 3b8fae716c don't force entry of prediction text every time, since prediction has unique ID		6 éve
..
brier_score.rkt	88e68619e7 Brier score and unit test	6 éve
create_database.rkt	3b8fae716c don't force entry of prediction text every time, since prediction has unique ID	6 éve
update_predictions.rkt	3b8fae716c don't force entry of prediction text every time, since prediction has unique ID	6 éve