* Checkpoint
* Add support for custom columns
* Remove old Store and Delegate abstraction
* Fix nits and rewording
* Remove unused mock file
* Update documentation for extension api server
* Remove the need for scheme for ConvertListOptions
* Rename store to utils
* fixup! Remove the need for scheme for ConvertListOptions
* Move watch helper to tests
* Add convertError at a few places
* Ignore misspell on creater
* Fix comments and remove unused params
* Add convertError to missing error returns
* Fix watcher implementation
* Document request.UserFrom and request.NamespaceFrom
This implements the Imperative API that is served at /ext with Steve. The imperative API is compatible with Kubernetes' API server and will be used as an extension API server.