Added author jdoc tag to all files.
Started refactoring all code using new rules set, making variable names
consistent, line lengths consistent, spaces instead of tabs, etc...
Refactored ContactImpl slightly - addNotes updated a bit.
Added test for data interface.
Restructure and refactor of ContactManager, DataInterfance and
Meeting - no logic/value changes.
DataSerialiser restructured and refactored, some small logic corrections
to support wiping of data when the argument is supplied to the
constructor.
Added data interface test holders.
Added further data tests to check contents of the data.
Updated tests further to check contacts are stored correctly.
Fixed issue with data interface and inconsistent id's - id's now set in
the contact manager rather than using the static in the base class.
Removed test helper - no longer used.