Make index links explicit again
Make index links explicit again

In an earlier commit I grouped together links on the admin index page
and made the title's just the framework name. In hindsight this was a
bad idea because it means that the links don't fully describe what they
are going to. This is apparent in the functional tests.

alphagov/digitalmarketplace-admin-frontend,alphagov/digitalmarketplace-admin-frontend,alphagov/digitalmarketplace-admin-frontend,alphagov/digitalmarketplace-admin-frontend