Im new to hibernate, and not quite sure what is wrong with my application. So i have these 2 modules: Core and Website.
I don't think that you can use hibernate-validator 5.2.2 (for Hibernate 5) with Hibernate 4. Try to use hibernate-validator 4.2.0.Final.
hibernate-validator 5.2.2
hibernate-validator 4.2.0.Final
And there are two ehcache jars in your class path!
ehcache
Try to use Maven or Gradle build to get valid dependences.