This PR changes how we calculate average time to production. Instead of
calculating fleeting 30 day windows and calculating the past and current
window, we now calculate a flat average across the entire project life.
This is less error prone as each feature will be tied to the earliest
time it was turned on in a production environment.
This PR takes the project status API a step further by adding the
capability of providing a date to control the selection. We are
currently making calculations based on a gliding 30 day window, updated
once a day. The initial database structure and method for updating the
UI is outlined in this PR.
