Fix test names
Allow external static assets

[#72543482] https://www.pivotaltracker.com/story/show/72543482
DOM and CSS changes to support custom assets.

[#72543482] https://www.pivotaltracker.com/story/show/72543482
Fix test to match DOM changes
Remove sass

[#72543482] https://www.pivotaltracker.com/story/show/72543482
Update oss stylesheet to fix logo spacing

[#72543482] https://www.pivotaltracker.com/story/show/72543482
Additional test fixes for markup changes

[#72543482] https://www.pivotaltracker.com/story/show/72543482
Merge branch 'feature/externalize_brand' into develop