Neural Service splitted to interface and implementation
NeuralDataManager interface created.
Class Level1Loader renamed to Level1DataManager
Train network method call added. 
ToDo: add training event listener.
Merge remote-tracking branch 'origin/master'

Conflicts:
	trading.app.neural/src/main/java/trading/app/neural/NeuralContext.java
	trading.app.neural/src/main/java/trading/app/neural/NeuralService.java
	trading.app.neural/src/main/java/trading/app/neural/NeuralServiceBase.java
	trading.app.neural/src/main/java/trading/app/neural/NeuralServiceImpl.java
Guava events added to network service.