fixes #3930 - refactoring of edit_self implementation.

fixed #3905 - wrong route in apidoc for reports delete (API v2)

fixes #3693 - API v2 - accept GET json format of object in PUT/POST requests to add/remove has_many associations

Fixes #3720 - Add description field to operatingsystem

fixes #2983 - Add autosign#index to API v1 and v2 and remove from UI controller

fixes #3776 - change NAME_MAP to be a method

fixes #3137 - API v2 - show error if optional nested object does not exist for nested route

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

fixes #3736 - users API uses login name as an identifying attribute