studio - adding in info icon to page intro help and making icon classes consistent in all new references

studio - page headers: added in logic to style page actions' height based on title having a subtitle or not

studio - soft landing: changed strong elem colors to be more subtle since we're not using new nomenclature

styled header of problem component adding menu and made it only visible when you are in the problem menu

studio: nav - clicking anywhere but nav's dropdowns will close them, fixed link outline and is-selected styling