fixes #4023 - API v2 - compute resources partials should should attribute alias names and not database column names

(cherry picked from commit 8a0ffcfaa900079d628253ee7f9de2feec182914)

fixes #3998 - API v2 error on /api/compute_resources, missing gce.json.rabl

(cherry picked from commit 9926d4d3f87e439d2eaa36f5d54b07d71c57c3fe)

fixes #3178 - add feature for compute profiles for hostgroups and hosts

fixes #3928 - API v2 - update os_default_templates for operating system

Fixes #3720 - Add description field to operatingsystem

fixes #3491 - API v2 rabl templates base, main, show for each controller

fixes #3768 - API v2 child nodes should not have an object root for each object

fixes #2931 - API v2 hosts JSON response, add *_name for each *_id

fixes #3018 - API v2 metadata for pagination, search, order in index collection json response

fixes #3011 - default root node name for api collections json response to :results but make it configurable