wiki: Validate wiki markdown with the wiki md processor.
filters: Allow a links to have rel as soup replaces nofollow with them.
filters: Allow id as an attribute
Wiki: Replace TOC with a python generated one

- Replaces terrible anchor links with header content based ones
- Fixes quirks with oddly ordered headers
- Fixes html in headers appearing as text in TOC
Wiki: Fix unicode encoding issue
Revert "Temporarily use "[deleted]" in JSON for deleted usernames."
Use an absolute URL for self-posts for the embeddable widget
Provide developer-friendly attributes in the modaction json.
fetch_trackers: Make trackers.py self-packaging for Elastic Beanstalk.

This should have no effect on actually running the script, but is useful
if you do want to use Eb or likely some other service like GAE.
fetch_trackers: Use X-Forwarded-For when behind a trusted reverse proxy.
fetch_trackers: Change tracking_domain config to be a full URL.
markdown_souptest: Allow img attributes through.
Revert "Revert "Temporarily use "[deleted]" in JSON for deleted usernames.""
Fix manage-consumers not correctly iterating over files.
wiki: Fix table of contents links in some browsers.
wikitoc: Accept period in header id.
Prevent replying to your own messages (except modmail)
health: Clean up imports / dead code.
health: Use correct MIME types for JSON responses.
health: Fail health check if specific file is present.

This lets us mark a server dead in the load balancer.