Fix handling of Moin titles that contain unicode characters
Fix smykowski debugging functions to make them consistent with other files
utility functions for ping inspection
Calls to mention() should be with Unicode strings
Deal with nginx's funny URL logging of unicode characters

nginx logs URLs in UTF8, with bytes encoded as \xNN. This needs to be
undone before being fed into the indexing queue. Note that this doesn't
apply to stuff from docs.anchor (Gollum) because we fake up those log
entries (nginx doesn't log clean POSTs for those edits, and we need to
handle pushed commits anyway).
Wrangle the data a bit more for inspection, leave this for later