Channel push item EDITs
Changed channel push to use random user_id instead of google authentication ID

This makes it so you don't have to be logged in to see changes, or the
same person can be logged in multiple times.
Channel push refinements

  - Support same user logged in multiple times
    (don't need to be logged in at all to see changes)
  - Support presence (garbage collect old connections)
Channel push for NEW and DELETE
Hide orig item under edit node while editing

No visible difference, but avoid badness if layout bug with overlay
edit node
Bug Fix: Shouldn't be a channel connection on Home page