Mixer-GUI: PlugIn-controls visible in channel-strips ...

… like mixbus is doing this: Controls would quickly be noticeable/ editable.

Think, this would be a nice option, especially for live-recording or live-sound-reinforcement. A plus in tight situations.

@kannix: feature requests go into Mantis: http://tracker.ardour.org/ where they can be discussed, tracked, and monitored with feedback.

Sorry, moved to http://tracker.ardour.org/view.php?id=4563