SCT Heavy Ion webdsiplay update: add coverage plot

Adding SCT coverage histogram to heavy ion webdisplay. Used by the remote shifters for Data Quality assessment.

tag: @grancagn

DataQuality/DataQualityConfigurations/config/SCT/heavyions_run.config

@@ -214,6 +214,13 @@ dir SCT {
 	##Default description
 	description = https://twiki.cern.ch/twiki/bin/view/Atlas/SctDqHistograms#BCID
 
+	dir DetectorCoverage {
+                hist SCT_CoverageOfLinksWithNoBadProblemVsLbs {
+			algorithm = SCT_GatherData
+			output = InnerDetector/SCT/Summary
+                }
+	}
+
 	dir GENERAL/Conf {
 		############ CONFIGURATIONS
 		hist SCTConfNew {