Simplify and make consistent import statements.
More whitespace fixes.
Move RepoClasses.py to repository.py (getting rid of mixed case file names).
Move testRepoClasses.py to test_repository.py (getting rid of mixed case file names).
Move ConfigFile.py to parsedef.py (getting rid of mixed case file names).
Move testConfigFile.py to test_parsedef.py (getting rid of mixed case file names).