Added CW4U favicon.
Changed favicon to arrow w/ circle.
Cleaned up formatting, nav and styling on About page.
Merge branch 'development' of github.com:smartchicago/chicagoworksforyou into about

Conflicts:
	frontend/src/about/index.md
Merge pull request #304 from smartchicago/about

About
Merge pull request #305 from smartchicago/branding

Branding