Switch to using oslosphinx

Adjust the docs to generate in the common OpenStack
format using the common OpenStack theme.

Also adjust the copyright to now be the 'OpenStack
Foundation' instead of being 'eNovance' now that
this code is under the openstack repositories.

Change-Id: I4026e80a1c98a8052d306d104bc92c70a3a36c3e
Merge "Switch to using oslosphinx"