Enable the CDN for prod.

Clean up some settings for dev and prod.
Update bart to deal with shared logs on dev and prod.

Proposal:

* Dev will run `bart_dev.sh` on cron every minute.
* Prod will run `bart.sh` on cron every minute.

Prod receives logs, processes them, and moves them to the NFS. Dev then
grabs the newest one, processes it, then gzips it so that it won't do it
again.
Stats - update country picker dropdown

* Remove menu items for which we don’t have data
Merge pull request #71 from almossawi/master

Stats - update country picker dropdown
Fix padding in interstitial modal
and consolodate interstitial LESS
spacing tweaks for interstitial content
Cleanup styles for mobile layout
Add mobile menu and pull privacy/legal links in
Merge pull request #74 from sgarrity/mobile

Mobile clean up and start of mobile menu
Parameterize firefox version for log filtering.
Merge pull request #70 from pmclanahan/update-bart-dev-prod

Update bart to deal with shared logs on dev and prod.
Build out mobile menu and make video work on mobile
Add exec bit to new bart shell scripts.
Fix insensitive share buttons in youtube video
Merge pull request #67 from pmclanahan/enable-cdn-prod

Enable the CDN for prod.
Clear out unused bootstrap LESS components
Merge pull request #75 from sgarrity/mobile

Mobile menu and video implementation
Start moving stats panel to mobile-first.
Move stats content to/from mobile elements.
More work on stats panel picker.