Converted the supervisor setup from specialized recipe to templates.

The collective.recipe.supervisor that we previously used imports
supervisor directly, and supervisor does not support Python 3.
Now we require an apt-get installed supervisor.
Py3: convert to implementer and adapter decorators, fix imports.
Update all versions.
Switch to zope.vocabularyregistry.
For Py3, we want alpha versions.
Bump keas.profile version, turn off WebError and translogger.

HTTP logging needs to be sorted out somehow.
Update versions.
Bump z3c.authenticator version.