Move testUnicodeStrings.utf8.txt to test folder
Move testUnicodeStrings.utf8.txt to test folder

This is the only file we were using from the test suite, so we just copy it
here to avoid the dependency.

Some cosmetic changes to better match PEP8.

DataONEorg/d1_python,DataONEorg/d1_python,DataONEorg/d1_python,DataONEorg/d1_python