fix TableElement to be really case insensitive
fix TableElement to be really case insensitive

nojhan/weboob-devel,nojhan/weboob-devel,Boussadia/weboob,laurent-george/weboob,willprice/weboob,Konubinix/weboob,RouxRC/weboob,sputnick-dev/weboob,laurent-george/weboob,nojhan/weboob-devel,frankrousseau/weboob,sputnick-dev/weboob,willprice/weboob,sputnick-dev/weboob,laurent-george/weboob,frankrousseau/weboob,frankrousseau/weboob,Konubinix/weboob,RouxRC/weboob,Konubinix/weboob,RouxRC/weboob,Boussadia/weboob,Boussadia/weboob,willprice/weboob,Boussadia/weboob