JQuery Superfish plugin to support dropdown effect
Apply new layout design and related images
Initiate superfish
Apply layout change, based on new theme
Load courses for show it in the navigation menu
Apply new theme for course and tutorial page
Add Bullet gem to identify N+1 queries and cache_counter
Apply default scope for tutorial
Apply  counter_cache for course
Apply  counter_cache for tutorial
Fix N+1 query problem
Fix course path under breadcrumbs
Set video name as video title instead of random string
Add download video link
Add empty link, while no video bind with tutorial
CSS relasted changes for breadcrumbs and breadcrumbs included in tutorial page
Animate the sub-header from left to right and css changes
Include friendly_id gem
Apply friendly_id configuration for course related url
Apply friendly_id configuration for tutorial related url