ereporter: hide http 500 errors
link front page blog webmention text to /about#blogs
more ereporter exceptions to ignore
responses with no post links now have no propagate task (53fdcce8dd45a473a6b96116568e3e522212e74b), so don't link to their log since it doesn't exist
add posse post discovery refetch FAQ
monkey patch HTTP 429 into webob; add InstagramClientError ereporter exception
blacklist localhero.biz since it returns 403
Merge pull request #234 from kylewm/publish-docs

docs: add note about in-reply-to rel-syndication discovery