Cython: fixed history dot graph for all views, and fixed history

recording for build_ref_db and ecotag

python/obitools3/dms/view/view.pyx

@@ -485,7 +485,7 @@ cdef class View(OBIWrapper) :
     @property
     def dot_history_graph(self):
         uniq_graph = []
-        for elt in self.history_graph_list:
+        for elt in self.dot_history_graph_list:
             if elt not in uniq_graph:
                 uniq_graph.append(elt)
         uniq_graph.insert(0, b"digraph \""+self.name+b"\" {\n")