You can now offer to do only a particular kind of help. Kinds of help are fully implemented (except for the one bug that I'm going to just live with).
Updates the URL when setting the ask for help. Ask for help radio now matches h URL or so.
Bugfix: output format for help needed array is fixed.
Rate limit the updates to the JSON blob. Only re-computer after changes have stopped for at least 1 second. It'll take that long to get from the page out to see the blob anyway, so no loss. And prevents a ton of updates & wasted effort.
Filled in description for iterative process change (first pass at it).