fix(graph tooltip): multi series tooltip did no highlight correct point when stacking was enabled and series were of different resolution, fixes #2620

Use SPDB license id

This avoids an npm warning telling you to use such an id.

updating the limit of returned tagvs in a MetricKeyLookup

fix(panel links): fixed panel height issue when using panel links, could cause strange panel flow, fixes #2576

fix(shutdown flow): improved shutdown flow and log closing, listing to kill and and SIGTERM as well, closes #2516

fix(opentsdb): blur event triggered twice for metric selector, caused double query to opentsdb after metric name change