Tidy imports.
Tidy imports.

- Sort per PEP8.

- Remove Python 2.5 workaround.

- Move sys.path munging to the 'if __name__ == __main__' stanza.

CestusMagnus/python-oauth2,edworboys/python-oauth2,arthurian/python-oauth2,joestump/python-oauth2,jackiekazil/python-oauth2,simplegeo/python-oauth2,CentricWebEstate/python-oauth2,squirro/python-oauth2