update get_bezier_element_entities() to return also vertices
update get_bezier_element_entities() to return also vertices

RexFuzzle/sfepy,sfepy/sfepy,rc/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,BubuLK/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,vlukes/sfepy,sfepy/sfepy,RexFuzzle/sfepy,lokik/sfepy,RexFuzzle/sfepy,lokik/sfepy,BubuLK/sfepy,vlukes/sfepy,sfepy/sfepy,lokik/sfepy,lokik/sfepy