factor out (un)dasherize into utils

server/boot/challenge.js

@@ -47,21 +47,13 @@ var R = require('ramda'),
 var challengeMapWithNames = utils.getChallengeMapWithNames();
 var challengeMapWithIds = utils.getChallengeMapWithIds();
 var challengeMapWithDashedNames = utils.getChallengeMapWithDashedNames();
+var challangesRegex = /^(bonfire|waypoint|zipline|basejump)/i;
+
+var dasherize = utils.dasherize;
+var unDasherize = utils.unDashedName;
 
 var getMDNLinks = utils.getMDNLinks;
 
-var challangesRegex = /^(bonfire|waypoint|zipline|basejump)/i;
-function dasherize(name) {
-  return ('' + name)
-    .toLowerCase()
-    .replace(/\s/g, '-')
-    .replace(/[^a-z0-9\-\.]/gi, '');
-}
-
-function unDasherize(name) {
-  return ('' + name).replace(/\-/g, ' ');
-}
-
 function updateUserProgress(user, challengeId, completedChallenge) {
   var index = user.uncompletedChallenges.indexOf(challengeId);
   if (index > -1) {

server/utils/index.js

@@ -60,6 +60,17 @@ Array.zip = function(left, right, combinerFunction) {
 
 
 module.exports = {
+  dasherize: function dasherize(name) {
+    return ('' + name)
+      .toLowerCase()
+      .replace(/\s/g, '-')
+      .replace(/[^a-z0-9\-\.]/gi, '');
+  },
+
+  unDasherize: function unDasherize(name) {
+    return ('' + name).replace(/\-/g, ' ');
+  },
+
   getChallengeMapForDisplay: function () {
     if (!challengeMapForDisplay) {
       challengeMapForDisplay = {};