Fix link broken during website overhaul
Fix changelog link in setup.py
Stop trying to use mirrors. They don't do anything.
Reflect the fact that paramiko is py3 compatible

Since version 1.13.0 paramiko has python 3 support, update the documentation to reflect that.
Conflicts:
	sites/www/roadmap.rst
Provide correct path to the installing.rst documentation
Don't pin Jinja2 in Travis CI.

Since we're not even running the tests against Python 2.5, I see no reason to force an older version of Jinja2.
Fix braino in setup.py after updating a link
Add jinja2 to test_requires, closes #1167