update docstrings of probes, clean-up
update docstrings of probes, clean-up

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