better error message for invalid queries (#791)
better error message for invalid queries (#791)


influxdata/kapacitor,titilambert/kapacitor,adityacs/kapacitor,bbczeuz/kapacitor,muxinc/kapacitor,sputnik13/kapacitor,sputnik13/kapacitor,influxdata/kapacitor,influxdb/kapacitor,adityacs/kapacitor,bbczeuz/kapacitor,influxdb/kapacitor,titilambert/kapacitor,influxdata/kapacitor,adityacs/kapacitor,yosiat/kapacitor,yosiat/kapacitor,sputnik13/kapacitor,influxdb/kapacitor,muxinc/kapacitor,yosiat/kapacitor,titilambert/kapacitor,bbczeuz/kapacitor,muxinc/kapacitor