Added shortid for server and unique id's for remote

server/node_modules/shortid/lib/is-valid.js

@@ -0,0 +1,19 @@
+'use strict';
+var alphabet = require('./alphabet');
+
+function isShortId(id) {
+    if (!id || typeof id !== 'string' || id.length < 6 ) {
+        return false;
+    }
+
+    var characters = alphabet.characters();
+    var invalidCharacters = id.split('').map(function(char){
+        if (characters.indexOf(char) === -1) {
+            return char;
+        }
+    }).join('').split('').join('');
+
+    return invalidCharacters.length === 0;
+}
+
+module.exports = isShortId;