Merge pull request #8 from gorchov/dev

Dev
activate javascript
update courses language
update courses language again
add free to lesson titles
add agile and testing links
update comment language
remove blank improperly placed application.js
add analytics javascript file to register custom events for link clicks
switch analytics event value from date (meaningless) to just 1 (still meaningless but smaller)
Merge remote-tracking branch 'origin/dev' into dev