PEP8 improvements white space here and there
PEP8 improvements white space here and there

I search with regexp ",[^\s-]" to spot missing space after comma. I also, add double break line in front of function or class. I change a couple of comparator in order to add space in front and after " == " for instance.
willimoa/pydal,michele-comitini/pydal,stephenrauch/pydal,niphlod/pydal,kmcheung12/pydal,manuelep/pydal,web2py/pydal