fix broken mute in jamtracks and suppress non-opener VU meddling

web/app/assets/javascripts/react-components/SessionJamTrack.js.jsx.coffee

@@ -71,8 +71,9 @@ MixerActions = @MixerActions
     $mute = $root.find('.track-icon-mute')
     $pan  = $root.find('.track-icon-pan')
 
+
     # get rid of idea that only open can modify
-    if true # @props.isOpener || @props.mode == MIX_MODES.MASTER
+    if @props.isOpener # @props.isOpener || @props.mode == MIX_MODES.MASTER
       context.JK.interactReactBubble(
         $mute,
         'SessionTrackVolumeHover',

web/app/assets/javascripts/react-components/SessionTrackVolumeHover.js.jsx.coffee

@@ -1,5 +1,6 @@
 context = window
 ChannelGroupIds = context.JK.ChannelGroupIds
+CategoryGroupIds = context.JK.CategoryGroupIds
 MixerActions = @MixerActions
 ptrCount = 0