legend working

...g-location/components/hydrograph/days-before-shortcuts.js

...cripts/monitoring-location/components/hydrograph/index.js

...nitoring-location/components/hydrograph/select-actions.js

...g-location/components/hydrograph/selectors/legend-data.js

...cation/components/hydrograph/selectors/thresholds-data.js

...itoring-location/components/hydrograph/threshold-lines.js

...ring-location/components/hydrograph/time-span-controls.js

.../src/scripts/monitoring-location/store/hydrograph-data.js

...src/scripts/monitoring-location/store/hydrograph-state.js

assets/src/scripts/web-services/sensor-things.js

wdfn-server/config.py