Refactoring:

* Renamed IStatrablePart to IStartableEntity.
* Removed configurator from IStartableEntity.
* Updated monitoring component.
* Cleanup in Entity and EntityInstance classes.
* Added some unit tests.
Refactorings

* Using IStartableEntity in StartComponent command.
* Using entityID in StopComponent command.
* Updated IApplicable interface and added ApplicableTo implementation.
* Event and Metadata are sub classes of ApplicableTo class.
* Added new values to StandardArguments.
* Fixed assemblies for groundstation-es5ec.xml.