Re-organized packages; renamed objects, variables, methods.

1. Packages re-organized — new package “types”;
2. TestResultsReport renamed OrderedReport;
3. enum ReportType re-named Order;
4. enum TestResultType re-named Format;
5. Title now has both header as well as footer;
7. Title add() renamed append();
8. Introduced NullContent (extends Content);
9. TestResult — new: sizeTitle(), methodTitle();
10. Variables, methods re-named where needed.