Collaboration: Create snapshot and watchMap realtime objects.
Collaboration: Use `myWatchMap` property.
Collaboration: `watchParticipant` and `unwatchParticipant` methods.
Collaboration: Realtime reference refactor.
Collaboration: Set partipant panes to my snapshot.
Collaboration: Put paneHash into file data to update editorpane hash.
ChatParticipantView: Removed isMe settings.
SettingsPane: Pass isWatching data to participant view constructor.
ChatParticipantView: Handle watch button state.
Collaboration: Allow cursor activity to be synced even if you are not watching change owner.