Most content from developer.openstack.org is now on docs.openstack.org,
update documentation for this.
A few links for the main index page and translated documents are not
updated yet, they will be updated once they are moved.
Change-Id: Ic7ff7a78c8b1e1ac2b2fef2398e700a59f84d779
Remove extra whitespace, line wrap overlong lines, convert too long
table to list-table, remove all setup.cfg files since we don't need them
anymore.
Change-Id: Icb0dc37c21927ecc6de163ae1b0245aea9b9c202
Import the api-quick-start from api-site repository so that it gets
published on docs.openstack.org.
Change-Id: Ic709ee736dda780fb71048a27158838a5806048e