Misc clean up:
Misc clean up:

Patrol action:
- Change format from XML to JSON for the API request
- Use Promise pattern for $.ajax
- Use text() instead of html() for the message
- Remove a few mw.log calls

Help icon / rcuser:
- Avoid document-wide live for simple click handler.

he7d3r/mw-gadget-rtrc,Krinkle/mw-gadget-rtrc