Changes

Update datasets and matchers
Changes in entities User and Event did fail build in jenkins, then
datasets and matchers hava changed 

Access service for wall event
Correction of some bugs:
- supress the anotation transcient on verificationToken
- persistence.xml in jsf need the class name of the entity
- persistence.xml in rest need the class name of the entity
- *.xml update the name of the atributes to the same in
  the database and add users and events to use in the test
- UserEJB modification of the method sendConfirmationUrl
  because the other code not have a good functionality
  when the verificationToken is null
Create:
- EventEJB
- EventEJBTest
- ServiceTestSuite
Update:
- isEqualToUser ckeck the new attribute accepted
- User add new attribute and put the method getter, setter
  and registeredUser with the javaDoc of the method

task15: add test data
 -user-create-event.xml add new good events and
 bad events to prove they are not created
-User.java is modified to add public to the default
 constructor

Adds events persistence to the EventEJB
The EventEJB class now can persist events. This commit also includes an 
important refactorization of the entity classes, that have been moved to
a new and more adequate package. In addition, the dataset classes for
user and event have been created.

Add data to test sets
Add data to the DBUnit test sets, to validate the logging logic. The
file "user-register.xml" has been created.

Added new methods in Event.java to follow user a event, and his tests