feat(dashboard): #82 add chart for sum of account and savings

internal/handler/root_and_404.go

@@ -65,6 +65,8 @@ func (handler IndexImpl) handleRootAnd404() http.HandlerFunc {
 
 func (handler IndexImpl) handleEmpty() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		// do nothing
+		updateSpan(r)
+
+		// Return nothing
 	}
 }