[UIHC] Brand bar

[bspeare]

How to test

yarn storybook

• Code review
• Test uihc boolean on logo and brand bar stories
  • http://localhost:6006/?path=/story/components-branding-logo--default&args=uihc:!false
  • http://localhost:6006/?path=/story/components-branding-brand-bar--default
    • Confirm that gold brand bar gets taller to make room for UIHC logo
    • Confirm that uihc variant displays as expected for all breakpoints

Notes:

• Sticky header CSS was moved out of brand-bar.scss to uids_base since that is where the JavaScript for that implementation lives.
• base/reset was moved to the first line of uids-core.scss by request of Dustin Quam.

[pyrello]

Pulling to test.

[pyrello]

Update looks good.