New pickup location and map upgrades

Four awesome improvements to the fulfillment method selector, specifically around pickup locations:

1. A map view of all pickup locations, with pins that can be selected.
2. Visual dates to see when pickup is available at specific locations.
3. The ability to hide and show future dates based on availability.
4. The ability to re-order pickup locations alphabetically, by next available date, or manually in the dashboard.

Let us know what you think!