Include non-apps in the application_layout sidebar
Include non-apps in the application_layout sidebar

We want to be able to view all repositories in the sidebar on the
left on pages such as '/apps/govuk-docker/troubleshooting.html';
there's no need to keep it to just applications.

alphagov/govuk-developer-docs,alphagov/govuk-developer-docs,alphagov/govuk-developer-docs,alphagov/govuk-developer-docs