add REST documentation for discussions module
fix typo
remove quotation marks from descriptions to keep parser happy
use enum syntax for model parameters
convert multiple body parameters to single model
document string|array as array
fix typo
move common models to util
fix typo
fix typo
move REST models to separate file
add REST models from common module
convert body parameters to form parameters
clarify return descriptions; remove body params
follow up from review
correct documentation
Merge branch 'restdoc-discussions' of https://github.com/sathomas/Hilary into restdoc-discussions
Follow-up on discussion REST API
Merge branch 'master' of https://github.com/oaeproject/Hilary into restdoc-discussions

Conflicts:
	node_modules/oae-discussions/lib/rest.js
Follow up on discussion REST documentation