Adding beta label to contact show page
Adding beta label to contact show page

Beta label only appears here as it was decided that the index page didn't
need to be listed as a beta.

Needs https://github.com/alphagov/slimmer/pull/64 and
https://github.com/alphagov/static/pull/381 to be displayed.

alphagov/contacts-admin,alphagov/contacts-admin,alphagov/contacts-admin