Updated vtkConfigurations DTD
Put clean vtkConfigurationManager files.

Not sure why vtkXMLExportTester is modified.
Removed the "addConfiguration" function.
Removed one of the 2 functions using addModule.
Failed attempt to shunt the "addModule" function.

For a reason or another, a vtkConfigurationManager can't initialize on the
projects created with the template. An undocumented automation error pops
up.