1.) Changes to applicationContext.xml. Added spring-security=config.jar
schema to the class path.

2.) Changes to the pom.xml file. Added dependencies for spring security.

3.) Added a security context file security-baristamatic-context.xml to
WEB-INF.

4.) Changes to the web.xml file. providing a hook to the spring security
web infrastructure.

5.) Added RoleDAO and RoleDAOImpl classes