Bug 53138: Remove Liquid threads notification message from watchlist view

Change-Id: Ic4b4a99e0e0d9f42732357af50eae6903b59abd1
Nearby bug fixes

Fixes the following problems
* Remove the rendered emitted event - doesn't seem to work
* Instead pull in code dependant on mode to reenable watch star in alpha
and previews in beta and alpha (bug 53125)
* restructure the PagePreviewOverlay
* Stop usage of nearby module in prep for FIXME
* rename Nearby to SpecialNearby to avoid confusion with generic Nearby module
* Fix middle click on desktop (bug 53188)

Change-Id: I5caf740f628d58d7c8c9d854fd2f95e24b453225
Merge changes I5caf740f,Ic4b4a99e

* changes:
  Nearby bug fixes
  Bug 53138: Remove Liquid threads notification message from watchlist view