VectorProperty: add interfaces to replace descriptor

GUI/Model/Descriptor/DoubleProperty.h

@@ -69,6 +69,8 @@ public:
 
     double step() const { return m_step; }
 
+    QString label() const {return m_label;}
+
     uint decimals() { return m_decimals; }
     void setDecimals(uint decimals) { m_decimals = decimals; }
 

GUI/Model/Descriptor/VectorProperty.h

@@ -50,7 +50,8 @@ public:
     R3 r3() const { return *this; }
 
     QString uid() const { return m_uid; }
-    void setUid(const QString& uid) { m_uid = uid; }
+
+    QString label() const {return m_x.label();}
 
     void rwProperty(Streamer &s, const QString &tag);