I converted SortedTableModel.java to use the standard Arrays.sort method
and removed HeapSorter.java.
This is used in the table display of atom properties. If you click on the
column headers the table will be sorted on the selected column.
In the course of unit-testing this code I found two bugs in the existing
code. I confirmed that they both exist in Release 5.
1. clicking on "Revert to Defaults" causes a NumberFormat exception
2. clicking on the header of the "Color" column causes raises an exception
I did *not* fix either of these bugs.