temporary fix of field shape
temporary fix of field shape

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