Properly serve data to frontend

[KevinMGranger]

Remaining work items:

• overall SDP score section
• deployment freq graph
• deployment freq deployment list
• all MTTR except day count (although day count is buggy)
• all CFR except main percentage
• remove focus / "elite" badges (goodhart's law)
• date picker

[KevinMGranger]

day count bug: the seconds are being converted to days, so it rounds down too close to zero.

We should consider code / a library to intelligently find the right unit, or allow changing it.

[KevinMGranger]

The date picker properly reports a range, but the function it passes through for the URL parameter collapses it too much. We need to support passing an offset in the frontend and/or backend, depending upon how the range is already handled.

[etsauer]

@KevinMGranger how do you feel about this as the solution? lab-monkeys/developer-intelligence-prototype#8