Stop PlayRun task gracefully

- listening for ctrl+d input to stop the play application
- open issues:
	- integration tests not running in daemon mode as DisconnectableInputStream reads input eagerly.
	- should have central place for dealing with userinput (probably a later story)
	- currently daemons InputForwarder stops forwarding after receiving ctrl+d command, means
	that after stopping the PlayRun task using ctrl+d no other stdin of a build is forwarded

TODO:
	- verify behaviour on windows

+review REVIEW-5261