Add MAIB Finder

This commit adds the ability for Finder Frontend to present MAIB
results.

Ticket:
https://trello.com/c/t240dCwY/370-maib-finder-add-support-to-finder-frontend-for-registering-and-rendering-maib-reports-2
Merge pull request #99 from alphagov/maib-reports

Add MAIB Finder