equipmentDAO refactoring, DeviceCommandContoller & DeviceNotificationController fixes
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/com/devicehive/controller/DeviceCommandController.java
	src/main/java/com/devicehive/controller/DeviceNotificationController.java
	src/main/java/com/devicehive/json/adapters/DateAdapter.java
	src/main/java/com/devicehive/messages/util/Params.java