Update two repos redirections - this commit fixes #592

Created by: quobit

Travis-CI Build #106 has two issues:

Links

1. 301 https://github.com/mitsuhiko/markupsafe → https://github.com/pallets/markupsafe
2. 301 https://github.com/mitsuhiko/itsdangerous → https://github.com/pallets/itsdangerous