Minor bug in CompariMotif 3.6 download

The recent fixing up of the server has highlighted a couple of bugs that have crept in during the upgrading of CompariMotif to handle complex motifs better. (More on this in a later post.) The problem is restricted to lower case motifs, so stick to upper case and all will be well. It will be fixed in the next release. A replacement rje_slimlist.py file is available on request if anyone needs to fix it urgently. (This also features replacement of "?" characters with "{0,1}" so these motifs are no longer rejected.)