Build search and information pages

Adds search and information page for organisations

Story: https://www.pivotaltracker.com/story/show/73388408

Once rummager  has been deployed (scheduled for Friday 11.30am, which is probably before this is ready to merge), this line should become

    facet_specialist_sectors: "1000,examples:4,example_scope:global,order:value.title"

which will cause the sectors to be returned in order of their titles.