fixes #3960 - wrap APIv2 errors in an "error" node

Fixes #4022: Make api puppetrun a PUT for REST standards

fixes #3099 - Adding parameters to locations and organizations

Fixes #3974 - Drop leftover Api::V2 wildcard route

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

fixes #3524 - api cannot reference smart proxies by name when they contain a "."

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

fixes #3020 - API v2 - option to specify version in URL as well as in header

fixes #3510 - plugin interface for registering a plugin, updated menu system

fixes #2763 - correcting doco links