Generalize search configuration

[timlevett]

Change the search configuration to be generic so you can have n search result sections of various formats.

Braindump from UWSP convo.

{
  "group" : "UWRF",
  "searches" : [
    {
      "title" : "wisc.edu",
      "url" : "https://google.com/custom/search/url/that/i/donot/know",
      "searchFormat" : {
        "title" : "searchitem.title",
        "desc" : "searchitem.description",
        "link" : "searchitem.googleurl"
      }
    }
  ]
}