Fix en caches:
Method cache:
- isTellingLike
- isAuthorFollowing
- getAll (NarrativeGenre y TellingType)

Domain con second level Hibernate:
- getById (NarrativeGenre y TellingType)
Merge branch 'issue_15_dev' into issue_15
Agregado de BaseService. Aùn no hace nada
agregado de BaseServiceTest
Merge branch 'issue_15_dev' into issue_15
Merge pull request #29 from orkonano/issue_15

Issue 15