Added JMSSerializerBundle.
Implemented RequestMaker and BasicRequestMaker.
Created entities: ChannelCollection, Channel, Enclosure, Image, Item
Changed services.xml to services.yml and updated DI.
Implemented Channel service.
Fixed type hints.
Encapsulated properties.
Fixed css path.
Created base view.
Fixed type hints.
Created function getChannelsByCategory
Updated IndexController
Created test for IndexController
Implemented NewsController and its view.
Created basic tests for NewsController.