remove compatibility function sorted()
remove compatibility function sorted()

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