Feature #5893 -> migrate com.silverpeas.web package (lib-core, web-core, ejb-core) :
- fixing ServiceProvider in order to get same behavior than this of @Inject (problem discovered when attempting to get an @Alternative instance of SilverpeasTrace interface)
- fixing DBUtil integration test
- removing links to jersey and spring from web-core project
- adding some password integration tests in lib-core
- fixing circular injection into pdc project by using ServiceProvider instead of @Inject
- removing all Mocking classes from ws-test-core
- adding a new System to specify a Silverpeas environment for WEB tests
- fixing WEB interceptor definitions
- adding PasswordResource tests as a first example...

Conflicts:
	lib-core/src/main/java/com/silverpeas/annotation/RequestScoped.java
	web-core/src/main/java/com/silverpeas/web/RESTWebService.java
	web-core/src/main/java/org/silverpeas/security/web/CipherKeyResource.java
Feature #5893 -> migrate com.silverpeas.web package (lib-core, web-core, ejb-core) :
- renaming Exposable by WebEntity and modifying the associated javadoc
- fixing web integration test WarBuilder according to REST Web service tests
- cleaning maven pom.xml