* Updates to GIFs and HoC content

* lint

* Override blocks playNote_ to emit VM event

* update blocks

Put stage, monitors, add buttons, tooltips, menubar under the block drag layer. Make sure the Extension button is above the toolbox.

* Use target id in volume reporter block

* update VM

Added a unit test and covered the other case (not used) where you might be trying to update the index zero of a list

The blend-mode property was being set on the whole thing, rather than the image only

draggable=false is not enough for firefox

I forgot that the integration test needs to try clicking, because finding text will find invisible text as well

This was causing a re-render for anything using the `drop-area-hoc`