Move license storage to database

model/system.go

@@ -12,6 +12,7 @@ const (
 	SYSTEM_DIAGNOSTIC_ID      = "DiagnosticId"
 	SYSTEM_RAN_UNIT_TESTS     = "RanUnitTests"
 	SYSTEM_LAST_SECURITY_TIME = "LastSecurityTime"
+	SYSTEM_ACTIVE_LICENSE_ID  = "ActiveLicenseId"
 )
 
 type System struct {