Allow specifying ?force-text-type=html to Markdown-capable API resources.

Review Request #6406 — Created Oct. 5, 2014 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
3843797...

Reviewers

Many of our resources support passing ?force-text-type=plain|markdown to
convert to either plain text or Markdown format. Now, these also support
html to render to HTML.

This is the first step to moving entirely to server-side rendering of
Markdown content.

All unit tests pass.

Tested manually with a couple review requests.