The frontend has been refactorized to use classes in the JavaScript files.

Some backend classes have been refactorized and simplified.

The EqualsVerifier library has been added to test the equals and hashCode
methods and it has been used to test the Person entity.

This commit updates the README.md file to include better and more detailed
descriptions of how to construct and execute the application.

The run-tomcat-mysql allows the execution of the project in a Tomcat 8 server
with a MySQL database through the "cargo:run" or "cargo:start" goals. This
commit adds the fizzed-watcher-maven-plugin to provide the project with
automatic redeployment when using the aforementioned profile.

For example, executing the Maven command the application will be served in a
Tomcat server an automatically redeployed when any file changes:

mvn -DskipTest=true -Prun-tomcat-mysql cargo:start fizzed-watcher:run

This commit updates the dependency and plugin versions in the POM file.
The most important update is the one relative to Selenium, as recent
Firefox browsers do not work with old Selenium Firefox drivers. Now,
during the construction, the Gecko driver is downloaded to work with
recent Firefox browsers.

The login token was incorrectly set to "admin:admin" instead of
"admin:adminpass". This commit fixes this and sets the valid token
value.

The WebContent directory was not used in this project.

The execution command recommended in README.md has been simplified (no tests are executed now) and made more robust by includen a project cleaning and packaging previous to execution.

The POM file has been changed to include the generation of reports for integration tests (execution and coverage) even when acceptance tests are not run.

The Tomcat URL has been changed for a more stable FTP location.

This commit adds the new resource UsersResource (/users) with a simple
functionality: retrieving the data of an user. This functionality
requires knowing the login of the user that is performing the request.
In this regard, this commit is an example of how this information can be
retrieved and how to test a resource that requires knowing the login of
an user.

This test was unintentionally leaved out when creating the test case.

The redirect created in the LoginFilter when the request URL included
query parameters was incomplete, as it missed the "?" that separates the
query parameters from the request URL. This commit fixes this error.

Some columns of the MySQL database created by the scripts in the "db"
directory where incorrectly set as nullable. This commit fixes this
error and sets them as non nullable columns.