Instead of a pure git hosting site, you might also consider a git-based wiki, such as one hosted by Branchable (http://www.branchable.com/), which additionally runs purely on free software (some of it AGPL licensed, too).
The wiki software, Ikiwiki (http://ikiwiki.info/) is powerful, and while it is not a full issue tracker, it provides tools to have a reasonable one; see http://ikiwiki.info/bugs/ for an example.
(I am partly responsible for Branchable; the software is by Joey Hess.)