Update default query in virtuoso.ini

This should help devs get started.

Co-author: @erikap

Author: madnificent

config/virtuoso/virtuoso.ini

@@ -234,7 +234,7 @@ DefaultHost			= localhost:8890
 ResultSetMaxRows           	= 10000
 MaxQueryCostEstimationTime 	= 400	; in seconds
 MaxQueryExecutionTime      	= 60	; in seconds
-DefaultQuery               	= select distinct ?Concept where {[] a ?Concept} LIMIT 100
+DefaultQuery               	= SELECT * WHERE { GRAPH <http://mu.semte.ch/graphs/public> { ?s ?p ?o. } } LIMIT 100
 DeferInferenceRulesInit    	= 0  ; controls inference rules loading
 ;PingService       		= http://rpc.pingthesemanticweb.com/