Refactor the code before adding unit tests
Merge remote-tracking branch 'pygibello/master' into monitoring

Conflicts:
	core/roboconf-agent-monitoring/src/main/java/net/roboconf/agent/monitoring/internal/AgentMonitoringScheduler.java
	core/roboconf-agent-monitoring/src/main/java/net/roboconf/agent/monitoring/internal/FileTaskHandler.java
	core/roboconf-agent-monitoring/src/main/java/net/roboconf/agent/monitoring/internal/MonitoringScheduler.java
Add unit tests and add a new feature in the file handler
Removed useless test config.
Added StopService reaction, and basic REST monitoring.