Force create_dt to start_dt for games.

Force create_dt to start_dt for games.

There's some drift in the database between the two, when in actuality they
should only be milliseconds apart. The start_dt *was* being set via the
application and the create_dt with a database default. The values resulting
from the defaults were sometimes minutes earlier, which doesn't makes sense.
Until the true cause is identified I'll force the two to be the same.