Replace removed global GOV.UK Template styles

GOV.UK Template included styles targeting elements
by their tag name, so affected all elements of
that type. Removing these files removes certain
styles from the top of the cascade.

Moving all components to GOV.UK Frontend (that are
possible) should fix this further down the
cascade. This adds them back to plug the gap in
the cascade until that work happens.

app/assets/stylesheets/main.scss

@@ -35,6 +35,7 @@ $path: '/static/images/';
 @import './govuk-frontend/all';
 
 // Specific to this application
+@import 'globals';
 @import 'grids';
 @import 'components/site-footer';
 @import 'components/placeholder';