Merge branch 'NXSTAGE-1000-upper-navigation' into 'development'

src/components.d.ts

src/components/icon/readme.md

src/components/navigation/menu-item/menu-item.scss

src/components/navigation/menu-item/menu-item.tsx

...navigation/menu-level-container/menu-level-container.scss

...e-header/hy-desktop-menu-links/hy-desktop-menu-links.scss

...te-header/hy-desktop-menu-links/hy-desktop-menu-links.tsx

src/components/site-header/hy-desktop-menu-links/readme.md

src/components/site-header/readme.md

src/components/site-header/site-header.tsx