Refactoring: Use ui file in Geometry profile edit window.

src/Model/Geometry/Profile.py

@@ -56,6 +56,9 @@ class Profile(object):
 
         self._profile_type = _type
 
+    def __len__(self):
+        return len(self._points)
+
     @property
     def number_points(self):
         return len(self._points)