* Add JSON API support for timezone update
* Simplify timezone controller to just head :no_content
* Use PUT instead of PATCH in timezone tests to match docs
* Use PATCH instead of PUT for timezone endpoint
Reverts tests to use patch and updates docs heading to PATCH
for consistency.
* Split docs/API.md into per-resource sections under docs/api/
* Move API endpoints index above authentication in docs/api/README.md
* Fix trailing comma in boards.md JSON example
* Fix trailing comma in cards.md, add Response label to identity.md, add Rich Text to endpoint index
Rob Zolkos