Changes

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

Changes the WildFly testing ports
The ports used by the WildFly executed during tests had an offset of
10000. This was the same offset used by the other tools in the
integration server, causing port collisions in the integration server.
This commit increases the offset to 30000 in order to avoid this port 
collision.

Adds the presentation of cover events
HomeController and index.xhtml have been added. This allows to show the 
main events and a list of the last events. tsk5 completed.

Adds the fake smtp server and resolves minor bugs
Fake smtp server is necessary to check the sending of emails from the 
wildfly server. The script fake_smtp.sh has been added to automatice the
download and the execution of fakeSMTP-2.0 server. Besides, .jar and
.zip files used by this script have been added to .gitignore. Steps for
use this script have been added to CONTRIBUTING.md. The standalone.xml
has been modified to support the smtp connection. The pom.xml has been
modified to automatice the use of smtp server by testing servers. 
Finally, Mail ejb has been modified to reference the mail session
resource created in the standalone.xml. tsk6 completed.

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.