babel extractors are now registered via python entry points,
so there is no need to declare babel extractors in babel configs.
This change is important to make translation work in Django 2.2.
django-babel does not work with Django 2.2 and looks unmaintained
for over two years. The horizon team is thinking to switch the extractor
to enmerkar (a fork of django-babel) to make extraction of translation
string work again near future. It is important to drop the extractor
definition to make the transition smooth.
Change-Id: I84d36a14b779a510bea5a24d991192016ae73273
Monasca project plans to use Zanata for translating monasca-ui
Added two configuration files
Change-Id: I3e73582e6077c5ee4a938e834b75bd3c0d3b6c65
Closes-Bug: #1538904
Akihiro Motoki