Update kumascript modules
Track login button clicks with Optimizely and GA
Revert "Simplify variables in compile-stylesheets"

This reverts commit f069acc1dad00797465ecc55d0e21109dfc218e0.

Commit f069acc1 changed the way that the Kuma root was detected in
compile-stylesheets so that output from Stylus would be less verbose.
The particular implementation, however, introduced a bug where the
script could not be run from within its own directory. As it turns out,
there is no easy, portable way to do what commit f069acc1 intended.
Use login button snippet, remove unneeded margin
Upgrade Prism JS
Move feeder app.
Move humans app.
Merge pull request #2573 from ubernostrum/move-humans

Move humans app.
Merge pull request #2572 from ubernostrum/move-feeder-app

Move feeder app.
retro-fit demos migrations to new module location
Merge pull request #2570 from darkwing/upgrade-prism-again

Upgrade Prism JS
Merge pull request #2563 from openjck/track-login-clicks

Track login button clicks
Merge pull request #2566 from openjck/revert-f069acc1

Revert "Simplify variables in compile-stylesheets"
Upgrade Font Awesome to 4.1.0
Merge pull request #2568 from darkwing/font-awesome-upgrade

Font Awesome upgrade
Merge pull request #2574 from groovecoder/fix-demos-migrations

retro-fit demos migrations to new module location
another install doc update
Fix font awesome compression
Merge pull request #2578 from darkwing/font-awesome-upgrade-compression

Fix font awesome compression
Merge pull request #2500 from darkwing/upgrade-kumascript

Update kumascript modules