Gamification Engine:

- service implementation and refactoring:

	- refactoring of the web app for the path
	- refactoring of the CRUD related to the ExternalAction services (partial CRUD services - import gamifiableActions)
	- created the related tests for the services implemented
	- Improved the infrasrtucture for rest services and for tests, fixed the proble related to the expansion of the baseRelativeUrl necessary in some cases (for instance badges)