Demote another frequent but unhelpful console message

data/aggregate.js

@@ -517,7 +517,7 @@ var debounce = function debounce(func, wait, immediate) {
 aggregate.update = debounce(function update() {
   // FIXME: maybe not for list view
   if (global.currentVisualization && global.currentVisualization.name !== 'graph') {
-    console.log('do not update aggregate for view', currentVisualization.name);
+    console.debug('do not update aggregate for view', currentVisualization.name);
   }
   if (aggregate.initialized) {
     global.filteredAggregate = aggregate.filters[aggregate.currentFilter]();