update server port and set new dubdiff method

Gruntfile.js

@@ -37,7 +37,7 @@ module.exports = function (grunt) {
     },
     express: {
       options: {
-        port: process.env.PORT || 9000
+        port: process.env.PORT || 80
       },
       dev: {
         options: {
@@ -208,7 +208,7 @@ module.exports = function (grunt) {
         options: {
           nodeArgs: ['--debug-brk'],
           env: {
-            PORT: process.env.PORT || 9000
+            PORT: process.env.PORT || 80
           },
           callback: function (nodemon) {
             nodemon.on('log', function (event) {
@@ -431,7 +431,7 @@ module.exports = function (grunt) {
       dist: [
         'jade',
         'sass',
-        'imagemin',
+        //'imagemin',
         'svgmin'
       ]
     },

server/components/wdiff/index.js

@@ -14,8 +14,9 @@ temp.track();
 // Perform a comparison between a and b
 // the callback should have parameters (err, result)
 
+module.exports = newversion
 
-module.exports = function(a, b, asMarkdown, callback) {
+function newversion (a, b, asMarkdown, callback) {
 
 
   //a few strings have to be escaped: "[-", "-]", "{+", and "+}"
@@ -50,7 +51,7 @@ module.exports = function(a, b, asMarkdown, callback) {
   return callback(null, resData);
 }
 
-var oldversion = function(a, b, asMarkdown, callback) {
+function oldversion (a, b, asMarkdown, callback) {
 
   //!!! this nested file-open is not a good pattern
   // better would be to use promises and write the two files asynchronously
@@ -325,4 +326,4 @@ function unescapeString(str) {
   str = str.replace(/\&\#91\;-/gm, "[-")
   str = str.replace(/-\&\#93\;/gm, "-]")
   return str  
-}
+}