Added test for unicode basic authentication
Python 3 compatible string handling
Switched to bytes
trim commented-out parts of docs/conf.py

proposed here:
https://groups.google.com/forum/?fromgroups=#!topic/pylons-devel/n2-7zvLWK3E
try to clarify the docs to avoid "if '__main__'" confusion
modification to the unencrypted cookie to use a clearer api

improved the signing to use a derived key based on a random salt, and
upgraded the hash from sha1 to sha512. Finally the entire result is b64
instead of just the payload.
Docs: Link from renderer narrative docs to example render_to_response call, and index the example.

More fully explain the 2 examples, one with render_to_response call
and one without.
Docs: project.rst: Hilight that dictionaries provide values to templates.
introduce SignedCookieSessionFactory

- Break apart UnencryptedCookieSessionFactoryConfig into a
  BaseCookieSessionFactory.

- Add support for reissue_time in the base. Set the unencrypted class to
  use reissue_time=0 for bw-compat.

- Add SignedCookieSessionFactory which wraps the base in a serializer
  that uses signing via a sha512+hmac with a secret derived using an
  8-byte random salt.
fix py3
Fixed an example

"from pyramid.view import view_config" instead of "from pyramid.view. import view_config"
Docs: project.rst: Utilize sidebars for out-of-band text.
Docs: project.rst: Move note that tempates get values from dictionaries down a paragraph.
Doc: introduction.rst: Broaden debug toolbar feature description to include other interactive development features.
Docs: introduction.rst: Improve wording.
Docs: renders.rst: Use punctuation to make sentence simpler.
Docs: renders.rst: Break sentence into two to simplify.
Docs: renders.rst: Make sentences short per IRC chat with committers.
Docs: renders.rst: Make sentences that everybody's happy with.
fix some broken positional args to sqlalchemy models