Compatibility fix for;
- Multi Prefix add-on
- @Banxix's [Banxix] Bump Thread add-on
- Fix 'show older items' in news feed would not return as expected
- Fix XF2.1 compatibility issue when viewing recent activity news-feed as a user who is following other users
- Add resource icon
- Cleanup phrasing and allow "-1" for various thresholds to actually disable things.
- Support extending member list.
- Better Thread List Page Threshold actually refer to pages instead of individual item counts