Apply NJWDS styling to header to improve way-finding on the site.

[mflynn01]

Communicate with users where they are on the site by using the NJWDS header style.

References:
https://blog.prototypr.io/ux-design-for-navigation-menus-d9875c91a7ea
https://www.nngroup.com/articles/navigation-you-are-here/

Dependencies:

• Project tag
• Milestone tag
• PM / Eng validation (spike ticket)

Notes: possible other improvements like Breadcrumbs and Descriptive Headings