Remove unused images
Use the best favicon option in all browsers
Update to the new OpenStax CNX logo
Re-name 'Connexions' to 'OpenStax CNX'

Conflicts:
	src/scripts/modules/media/footer/attribution/attribution-template.html
Minify images
Use updated and high res logos
Minify images
Adjust styling for new logo
Merge pull request #448 from Connexions/rename-connexions-and-update-logo

Rename connexions and update logo