[Duplicate]Add redirections from /[release]/[language] to /[language] for all local languages

As currently, there are less number of translated documents in local languages, there is just one landing page per language in the link format as http://docs.openstack.org/[language]/. But when end users try to visit http://docs.openstack.org//[release]/[language] for local documentations as English version http://docs.openstack.org/[release]/ (for example http://docs.openstack.org/mitaka/), they will hit '403 Forbidden' issue. To make it friendly to end users, redirection from /[release]/[language] to /[language] needs to be added.