Problem:
The Grafana graph Reference Snak main properties and other graphs stopped displaying values after 2018-12-31.
The data is generated by https://github.com/wikimedia/analytics-wmde-toolkit-analyzer/blob/master/analyzer/src/main/java/org/wikidata/analyzer/Processor/MetricProcessor.java and sent to graphite using https://github.com/wikimedia/analytics-wmde-scripts/blob/master/src/wikidata/dumpScanProcessing.php
Acceptance criteria:
- The Grafana graphs on the dashboard show current data again