groups: started revision

- Removed UUIDs since we already have ptrs
- Changed input passthroughs from map to list so they'll always be added in the same order
- Fixed group copy on duplication
- Fixed group copy on clip split

app/node/node.h

@@ -27,7 +27,6 @@
 #include <QObject>
 #include <QPainter>
 #include <QPointF>
-#include <QUuid>
 #include <QXmlStreamWriter>
 
 #include "codec/frame.h"
@@ -121,9 +120,6 @@ public:
 
   Project* project() const;
 
-  const QUuid &GetUUID() const {return uuid_;}
-  void SetUUID(const QUuid &uuid) {uuid_ = uuid;}
-
   const uint64_t &GetFlags() const
   {
     return flags_;
@@ -1340,8 +1336,6 @@ private:
 
   PositionMap context_positions_;
 
-  QUuid uuid_;
-
   uint64_t flags_;
 
   QVector<NodeGizmo*> gizmos_;