This includes:
* Section about command/param info in usage guide
* Section about metadata retrieval in usage guide
* Guide about differences between CLI and API
* Access control guide (management of roles, privileges and
permissions).
* Guide about API contexts
* JSON-RPC usage guide and JSON-to-Python conversion
* Notes about types in API Reference
Signed-off-by: Antonio Torres <antorres@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
