Changed <html> to </html> on webmention get response
Merge pull request #224 from kylewm/typo-on-404

Changed <html> to </html> on webmention get response
link to /users on user 404 page
allow publishing when running in dev_appserver
monkey patch ereporter with a blacklist to ignore some exceptions. for #211
publish: detect and complain about rsvps without in-reply-to links. fixes #227
add http 400 errors to ereporter blacklist