Port to Python3 (closes #14159555)
Add py34 environments to tox configuration (only for CubicWeb >= 3.23).
And depend on hg version of cubicweb-pyramid since it is not currently
Python3-compatible.
from cubicweb.cwconfig import CubicWebConfiguration
def includeme(config):
appid = config.registry.settings['cubicweb.instance']
cwconfig = CubicWebConfiguration.config_for(appid)
config.registry['cubicweb.config'] = cwconfig
config.registry['cubicweb.repository'] = repo = cwconfig.repository()
config.registry['cubicweb.registry'] = repo.vreg