Swap rules to be mobile-first for external links
Swap rules to be mobile-first for external links

Swap order of includes for external links, so the smaller external link
style (16px) is defined first and is overridden at 641px and up
(tablet) by the larger size (19px).

quis/govuk_template,alphagov/govuk_template,robinwhittleton/govuk_template,alphagov/govuk_template,quis/govuk_template,alphagov/govuk_template,alphagov/govuk_template,robinwhittleton/govuk_template,robinwhittleton/govuk_template,jonheslop/govuk_template,quis/govuk_template,jonheslop/govuk_template,quis/govuk_template,alphagov/govuk_template,jonheslop/govuk_template,robinwhittleton/govuk_template,jonheslop/govuk_template,quis/govuk_template,jonheslop/govuk_template,robinwhittleton/govuk_template