added gradeIt(String[] answers) to all questions
still must be implemented for each type.
Changed build to automatically get TOMCAT environment variable.
Hopefully this will allow building and copying to tomcat automatically.
fixed classes with isCorrect(String[]) and gradeIt(...)

fixed projectBuild.xml, does not use scriptdef (did not work)
Code is only commented out because it should work.  It is a good idea.
Added new test package with unit test code separated from classes