Adds v1 API documentation to doc/source/api

After discussion https://review.openstack.org/#/c/129384/ moving
to the doc directory in swift repo.

This lets us eliminate the object-api repo along with all the <service>-
api repos and move content to audience-centric locations.

Change-Id: Ia0d9973847f7409a02dcc1a0e19400a3c3ecdf32
Fix translation setup

Fix the output directory, it should be swift/locale.
This fixes the importing of translations.

Change-Id: I48311773c9d200c3b1739dc796618849416096ed
Merge "Adds v1 API documentation to doc/source/api"
Merge "Fix translation setup"