Investigate use of partitioning for extremely large tables like log_play

[clpetersonucf]

Materia databases in a production environment accrue millions of rows in the log_play table across time. Performing queries against that data, even with indexed fields, can take excessively long amounts of time. We might consider looking into partitioning log_play based on created_at to keep recent (within a ~semester) data hot and rapidly available.