[#6656] ticket:437 Use OAuth token for github api calls
[#6656] ticket:437 Check rate limit values and sleep until reset
[#6656] ticket:437 More careful rate limit checking
[#6656] ticket:437 GitHub OAuth flow
[#6656] ticket:437 Use token in github importers
[#6656] ticket:437 OAuth flow in individual github import controllers
[#6656] ticket:437 OAuth tests
[#6656] Updated requests version and added oauthlib to match requests-oauthlib dependencies

Signed-off-by: Cory Johns <cjohns@slashdotmedia.com>
bump GoogleCodeWikiImporter version, for issue/revision autolinking