change app to container
Merge branch 'feature/rename_Interfaces_to_Contracts' of https://github.com/narrowspark/framework into feature/rename_Interfaces_to_Contracts

Conflicts:
	src/Brainwave/Application/ApplicationServiceProvider.php
	src/Brainwave/Filesystem/FilesystemAdapter.php
	src/Brainwave/Hashing/HashingServiceProvider.php
	src/Brainwave/Routing/RouteFactory.php
	src/Brainwave/View/Engines/Adapter/Json.php