This adds two sql functions that can be used to access the views to
retrieve monthly active user counts. The functions ensure that any time
calculates are performed in UTC, so that the month bounds align with the
start of the month in UTC.
1. hcp_billing_monthly_active_users_last_2_months() will return monthly
active users for the current and previous month.
2. hcp_billing_monthly_active_users_all() will return monthly active
users for all months. This function can also be provided a start time
and or end time to filter the results to a specific range.
Timothy Messier
d84eb01516