Docs Proxy and Redirects!

[ewdurbin]

Reimplements the pypi-docs-proxy, also adds the ability to read/parse a redirects.txt from the root of the bucket which contains a \n joined set of JSON redirect configurations:

{"project_name": "clandestined", "include_path": false, "base_uri": "https://ernest.ly"}
{"project_name": "pypi-docs-proxy", "include_path": true, "base_uri": "https://ernest.ly"}