Emberjs: Updated for products/contacts fixture data
- Added sorting functionality to 'products'
- Use of Ember.computed.alias() method
- Use of App.<Model Name>.store.find('model name', ID)
  to find specific record
Emberjs: Added onSale filter
Emberjs: Added deals filter on product price
Emberjs: onSale filter updated using controller & nested route
Emberjs: deals filter updated using controller & nested route