Add a bit of styling to the new UI

Basic styling for lists and buttons.

Also add the urls of the modified links to the list of queries.
Put list of bets for each query in an ol
Tidy up spacing
Merge pull request #11 from alphagov/ui-tidyup

Add a bit of styling to the new UI

https://www.pivotaltracker.com/story/show/73288086
Add govuk_admin_template gem.
Change layout to use govuk_admin_template

This should be more consistent with other admin apps.
Merge pull request #12 from alphagov/use_govuk_admin_template

Use govuk admin template