query con-[.] uses undefined prefix

[VladimirAlexiev]

The sparql 1.1 query con-[.] is construct where {nonsensical:1 ?p ?o}.
http://factforge.net/sparql reports
org.openrdf.query.parser.sparql.ast.VisitorException: QName 'nonsensical:1' uses an undefined prefix

The query is to blame.
(Note: I got this from the query tooltip, too lazy to find the file)

[cbuil]

the query con-[.] in https://github.com/pyvandenbussche/sparqles/blob/master/src/main/resources/ftask/sparql11/CON-%5B.%5D.rq looks correct. We will check the tooltip.