Move previously custom WH logic to align nav when there's no proposition title, expose it via a class name that apps can control
Move previously custom WH logic to align nav when there's no proposition title, expose it via a class name that apps can control

alphagov/govuk_template,robinwhittleton/govuk_template,jonheslop/govuk_template,quis/govuk_template,robinwhittleton/govuk_template,quis/govuk_template,robinwhittleton/govuk_template,froddd/govuk_template,daveraine/govuk_template,alphagov/govuk_template,froddd/govuk_template,robinwhittleton/govuk_template,jonheslop/govuk_template,alphagov/govuk_template,daveraine/govuk_template,jonheslop/govuk_template,jonheslop/govuk_template,froddd/govuk_template,alphagov/govuk_template,alphagov/govuk_template,jonheslop/govuk_template,quis/govuk_template,robinwhittleton/govuk_template,quis/govuk_template,quis/govuk_template,froddd/govuk_template,froddd/govuk_template,daveraine/govuk_template,daveraine/govuk_template