This commit updates the RSS post content to use email formatting. Many
plugins are using the `reduce_cooked` method to format content that is
not displayed outside of Discourse application. Using email formatting
also strips the secure media and various other things that is only meant
for Discourse client side application.
- Eliminate superfluous "author wrote" block
- Eliminate block-quote for all posts
- Move participant count and reply count to 1 line
- Prioritize name over username if forum requests
- Use fabrication in list controller spec to speed up spec
user_url() failed for usernames containing Unicode characters because it expects URL encoded usernames. RSS feeds do not support IRIs, so lets convert them to URIs by encoding the usernames.
RSS spec says the author tag should be an email address, forcing us to put in a junk no-reply@example.com email. Instead, we should use dc:creator, which allows us to use any name we want for the user.
