Feature/select dropdown map filters

[MilesHeise]

adds basic version of dropdown filters for the map

notes:

• the multi-filter might want different options/more options/correctly spelled options

• the filter for things like wic/snap might be better as individual checkboxes? also I had to test functionality using 'saturday' as the filter rather than things like wic or snap because there is currently no data with 'true' for any of them

• all of it could use a refactor probably, very quickly done

[MilesHeise]

since this one hadn't gone through from 2 weeks ago, had to add onto this branch rather than a new PR. second push includes removing the dummy data from the details page and updating the select tag for towns to be a typeahead select as requested

[saylorsd]

@MilesHeise it looks like there's a merge conflict. could update your fork to so we can merge it in clean?