fix Term.check_shapes() for scalar 'N' values
fix Term.check_shapes() for scalar 'N' values

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