3.0 release, major re-write on script.

- no red mod mail fix
- fixed unread view
- performance improvements all around (especially loading)
- auto expand all is no longer slows expanding
- fixed redundant view links
- rewrote highlight new messages - much better performance
- unread is now an inbox view
- now works on per-subreddit mod mail and multi-sub mod mail
- five minute buffer for unread mail
- first run settings cue
- expanding threads no longer de marks thread as new