small number of changes:
- removed hard-coded links to package release versions, using
a placeholder "latest" instead which is understood by pytest-plugs
- testing against pytest-2.5.2
This changes were implemented so this page only needs
to be updated after pytest releases, not after each package version changes;.
- Removed author and email in favor of repository link.
Repository link is obtained from the 'home_page' field
obtained from pypi. For plugins that don't have
that field set, function obtain_override_repositories
is used to override it in favor of known repositories url.
- Shortened "Python 2.7" in favor of "py27" to save space;
Same for "Python 3.3".