Restore avatar frames in collaborative mode
Don't blink remote carets in collab mode

The caret should not blink by default. The local caret will blink once
focus is set to the window (or restored during setup).
Merge pull request #349 from peitschie/collab-cursor-fixes

Fixes to caret & avatar in collab mode
Always blur focus from the event trap before updating content editable

Toggling the content editable flag while the element is in focus will
sometimes stop the browser from allowing the IME to be activated.
Blurring the focus and then restoring ensures the browser re-evaluates
the IME state after the content editable flag has been updated.
Correct subscription to the blur event

The blur event should always be on the event trap.