Upstreaming from https://phabricator.wikimedia.org/rPHAB3d33d1cceac7 , original patch by @20after4

Some folks use feed reader software, and the RSS/Atom feed support in Phame is not discoverable currently, as the URL is not exposed. This affects users of e.g. Mozilla Pocket or Chrome users who have https://chrome.google.com/webstore/detail/rss-subscription-extensio/nlbjncdgjeocebhnmkbbbdekmmmcbfjd installed.

1. Create a Phame blog.
2. Go to its HTML page and look at the source code.
3. Fail to find the Atom/RSS URL of that blog exposed, which would allow software to point out the availability of an RSS feed