some small fixes: grey-out send button if not ready

nodejs/routes/index.js

@@ -3,8 +3,12 @@
  * GET home page.
  */
 
+var package = require(__dirname+"/../package.json");
+
 exports.index = function(req, res) {
-  res.render('index', {
-      projecturl: "https://dev.marc.waeckerlin.org/redmine/projects/safechat/embedded/index.html"
+    res.render('index', {
+        projecturl: "https://dev.marc.waeckerlin.org/redmine/projects/safechat/embedded/index.html",
+        packagename: package.name,
+        packageversion: package.version
   });
 };