remove usused is_other flag from variables
remove usused is_other flag from variables

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