MKT-576 -- Resources page

# TODO
- [x] Finalize content selections
- [ ] Test on mobile devices
- [x] Rebase
- [x] Restructure resources in directories
- [x] Edit gruntfile for resources in directories
- [x] Upload images to CDN
@stewsmith can you make sure that all of these urls are protocol agnostic? they should all start with `//` instead of `https:`