BUG: preserve whitespace in console completion
BUG: preserve whitespace in console completion

Erasing whitespace doesn't make very much sense for any language,
but especially not for python.

Fixes https://github.com/commontk/CTK/issues/751

CJGoch/CTK,SINTEFMedtek/CTK,CJGoch/CTK,SINTEFMedtek/CTK,commontk/CTK,commontk/CTK,CJGoch/CTK,CJGoch/CTK,SINTEFMedtek/CTK,CJGoch/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK,commontk/CTK