Squashed 'app/' changes from 3621722..ee13d0d

ee13d0d Merge pull request #1 from ministryofjustice/remove_page_title
4e1e97d Remove requirement for page_title helper method

git-subtree-dir: app
git-subtree-split: ee13d0d64ba37d12fed270066c2b9cfc451227de
Merge commit '936f389cd697720816ca6e97ddb43127afb58f3e'
Merge branch 'master' of github.com:ministryofjustice/moj_frontend_toolkit_gem