GH-338, GH-513, GH-700 Unify edit instance with console window

* The resulting instance window can be closed at any point.
* Main window is kept open and running instances are marked with a badge.
* Multiple instances can now run from the same MultiMC - it's even more **multi** now.
* MultiMC can be entirely closed, keeping Minecraft(s) running.

application/groupview/InstanceDelegate.cpp

@@ -122,6 +122,10 @@ void drawBadges(QPainter *painter, const QStyleOptionViewItemV4 &option, BaseIns
 	{
 		pixmaps.append("updateavailable");
 	}
+	if (instance->isRunning())
+	{
+		pixmaps.append("status-running");
+	}
 
 	// begin easter eggs
 	if (instance->name().contains("btw", Qt::CaseInsensitive) ||