simplified compute_nodal_normals()
simplified compute_nodal_normals()

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