PR feedback + remove redundant code + add a test

server/config.js

@@ -6,6 +6,11 @@ const badgeConstants = {
     defaultUpColor: "#66c20a",
     defaultDownColor: "#c2290a",
     defaultPingColor: "blue",  // as defined by badge-maker / shields.io
+    defaultStyle: "flat",
+    defaultPingValueSuffix: "ms",
+    defaultPingLabelSuffix: "h",
+    defaultUptimeValueSuffix: "%",
+    defaultUptimeLabelSuffix: "h",
 };
 
 module.exports = {