List of lessons in tracks#edit now sortable (just visually)
Add jQuery-turbolinks, remove Ruby Ace type in all lessons
Move JavaScripts from CodeLesson#show to application.html.erb
Update file structure, add partials
Remove unecessary JS
Update README as Kodets will no longer be self hosted
When li is sorted in Tracks#edit, data-order attribute changes to the order
Rearrage JavaScripts and loading, add conditional statements inside JS files
Update JS files architecture