Normalize vizwiz configuration schema

[fionawhim]

If a JSON value should be interpreted as HTML, then its key should make that obvious. E.g. descriptionHtml and popoverHtmlMustache. Other keys that are just strings should stay the same (such as "title")

Putting this above the milestone only because migrating the config will be more of a pain once we're in the wild.

[fionawhim]

First pass at normalization. Would like to find an API docs site or something to be able to put this in place for comment / documentation.

{
  "format": "1.0",
  "uid": "0PXs0K514dn917qVqw4Su",
  "dataSources": [
    {
      "uid": "HzViXPtxfbDTmKxSXTHv6",
      "icons": {
        "url": "https://patterns.boston.gov/images/global/icons/mapping/waypoint-charles-blue.svg",
        "cluster": true
      },
      "polygons": {
        "style": "default",
        "color": "#0C2639",
        "hoverColor": "#FB4D42"
      },
      "popupHtmlTemplate": "<div>&lt;img src=\"{{Image}}\" class=\"cdp-i\" alt=\"{{Councilor}}\" style=\"margin-bottom: 1rem\"/&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;div class=\"ta-c m-v300\"&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;div class=\"cdp-t t--sans t--upper m-t200\"&gt;{{Councilor}}&lt;/div&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;div class=\"cdp-st t--subinfo t--g300\"&gt;District {{DISTRICT}}&lt;/div&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/div&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;a href=\"{{Bio}}\" class=\"btn btn--b btn--100 btn--sm\"&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Visit webpage&lt;span class=\"a11y--h\"&gt; of {{Councillor}}&lt;/span&gt;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/a&gt;</div>",
      "source": {
        "type": "cob-arcgis",
        "service": "https://services.arcgis.com/sFnw0xNflSi8J0uh/ArcGIS/rest/services/City_Council_Districts/FeatureServer",
        "layer": 0
      },
      "legend": {
        "style": "icon",
        "label": "Boston City Council Districts"
      }
    }
  ],
  "maps": [
    {
      "uid": "OL~DGvQTVMyD00yr068SZ",
      "title": "City Councilor Look-Up",
      "instructionsHtml": "       <div class=\"t--info\"> <p>\n          Hover over and click on your district to find your councilor, or search your address.\n        </p>\n        <p>\n          To see all City Council members, including at-large councilors, visit the\n          <a href=\"https://www.boston.gov/departments/city-council#city-council-members\">City Council page</a>.\n        </p>\n </div>",
      "latitude": 42.347316,
      "longitude": -71.065227,
      "zoom": 12,
      "showZoomControl": true,
      "showLegend": true,
      "showUserLocation": false,
      "addressSearch": {
        "title": "Find an address",
        "placeholder": "Search for your address...",
        "zoomToResult": true,
        "autoPopupLayerUid": ""
      }
    }
  ]
}

[fionawhim]

Considering documenting this with JSON-Schema and generating documentation with docson.

[fionawhim]

#31 has an agreed-upon new schema. Vizwiz needs to be updated to consume / generate it.

See CityOfBoston/patterns#303 for the web components side of this change.