We're introducing the concept of a Tracker. Orgs often have programs they're
running, like a specific grant tied to certain locations, or an internal
initiative comparing to parts of a city.
Trackers allow them to "track" the task log weights for a set of shifts.
Eventually we'll show breakdowns by month and food taxonomy, but for now, this
just shows a list of trackers and a total weight.
These are also totally hidden; only available to operations users for the
moment.