FortuneServer2 does what FortuneServer does, but it calls a LoadCategories
servlet to dynamically load the categories from the derby database the first
time the webapp is invoked.

To compile the LoadCategories servlet:

(1) Modify WEB-INF/classes/examples/tutorial/derby/LoadCategories.java
    for the location of your Derby database.

(2) Add to your CLASSPATH:
    $CATALINA_HOME/common/lib/servlet-api.jar
    WEB-INF/lib/jstl.jar
    WEB-INF/lib/standard.jar

    The jstl.jar and standard.jar files were copied from 
    $CATALINA_HOME/webapp/jsp-examples/WEB-INF/lib
