userstream page does not display text for highlights but shows as much as it can from the quote

For replies it populates the annotation.quote field with the parent's reply.
The userstream.coffee page will use this field if exists.

Thread collapse handling is moved to the thread directive. This
directive no longer creates new scope (since the tranclusion of the
recursion was making it hard to propagate events up the thread
scopes).

Now, which children are being edited is tracked by every ancestor
so that threads cannot be collapsed if editing is taking place
below.

Fix #555

This reverts commit a686e540ee3a012cc7dbec50ac5d3f07fc5f75cd.

working annotation test 

Kill vertical bar left of username.

Fixes #553.

Changed icons, fixed bug, added tooltips and button press effect to controlbar

Unite code for user streams and tag streams.  Fixes #532.

Add support for actually using Gettext in Annotator.

Unit/Functional Tests

Fixes #560.

Also remove now superflous .gray-tags class from CSS.
Fixes #526.

Fixes #555

Fixes #557

Added Controlbar to UI

Add V1 of tagging support

Closes #514 

I wasn't able to follow Randall's suggestions since that broke many things for some reason. I am opening an issue for Control Bar V2, which will include better icons, etc.

We don't have to add annotations to the view if they're replies.

This reverts commit 37134d369fc5c8252edb6d9dd615aa6e66bd1d1c.

From hypothesis/annotator@develop