Database display names now returned

We have a treat for our friends who are integrating Compose into their own systems... the display names of our offerings are now returned as part of our "databases" endpoint.

Here's an example of a portion of the response to illustrate the change:

{
  "_embedded": {
    "applications": [
      {
        "type": "elastic_search",
        "status": "stable",
        "display_name": "Elasticsearch"
        // ...
      }
      // ...
    ]
  }
}