add REST documentation to preview-processor module
remove server from REST endpoint keys
alphabetize parameters
convert form parameters to body parameters, remove quotation marks to make parser happy
move REST models to separate file
follow up from review
follow up from review
clarify array parameters
Merge branch 'restdoc-preview-processor' of https://github.com/sathomas/Hilary into restdoc-preview-processor
Follow up to preview processor REST API documentation