Structured metadata returns invalid info

[mattstratton]

This is what comes up for ponyville:

<script type="application/ld+json">
  {
    "@context": "http://schema.org",
    "@type": "ExhibitionEvent",
      "description": "The conference that brings development and operations together.",
    "name": "DevOpsDays Ponyville 2017",
    "startDate": "2017-02-20",
    "endDate": "2017-02-21",
    "url": "/events/2017-ponyville/",
    "image": "/events/2017-ponyville/logo.png",
    "location": {
      "@type": "Place",
      
        "name": "Applejack House, Ponyville",
      
      "address": "41.882219, -87.640530"
    }
  }
  </script>

Notice the url, for example.

We should build that using the new weburl key in the config.toml.

[mattstratton]

Should be fixed at the same time as #234