[HLVAL-483] Update issueTrackerUrl to application_issue_tracker_url value

GazelleHL7v2Validator-ui/src/main/webapp/layout/footer.xhtml

@@ -11,5 +11,5 @@
     <ui:param name="appAdminTitle" value="#{messages['net.ihe.gazelle.hl7.AdminTitleGazelleHL7Validator']}"/>
     <ui:param name="appAdminEmail" value="${admin.email}"/>
     <ui:param name="appAdminName" value="${admin.name}"/>
-    <ui:param name="issueTrackerUrl" value="${project.parent.issueManagement.url}"/>
+    <ui:param name="issueTrackerUrl" value="#{applicationConfiguration.getValueOfVariable('application_issue_tracker_url')}"/>
 </ui:decorate>