Show users editing and lag, properly send message to indicate that all users have left channel and show basic error box if disconnected.

www/main.js

@@ -1,29 +1,15 @@
 define([
     'api/config?cb=' + Math.random().toString(16).substring(2),
     'realtime-wysiwyg',
+    'messages',
     'bower/jquery/dist/jquery.min',
     'bower/ckeditor/ckeditor',
     'bower/tweetnacl/nacl-fast.min',
-], function (Config, RTWysiwyg) {
+], function (Config, RTWysiwyg, Messages) {
     var Ckeditor = window.CKEDITOR;
     var Nacl = window.nacl;
     var $ = jQuery;
 
-    var INITIAL_STATE = [
-        '<p>',
-        'This is <strong>CryptPad</strong>, the zero knowledge realtime collaborative editor.',
-        '<br>',
-        'What you type here is encrypted so only people who have the link can access it.',
-        '<br>',
-        'Even the server cannot see what you type.',
-        '</p>',
-        '<p>',
-        '<small>',
-        '<i>What you see here, what you hear here, when you leave here, let it stay here</i>',
-        '</small>',
-        '</p>',
-    ].join('');
-
     var module = { exports: {} };
 
     var parseKey = function (str) {
@@ -54,12 +40,11 @@ define([
         editor.on('instanceReady', function () {
             editor.execCommand('maximize');
             var ifr = window.ifr = $('iframe')[0];
-            ifr.contentDocument.body.innerHTML = INITIAL_STATE;
+            ifr.contentDocument.body.innerHTML = Messages.initialState;
 
             var rtw =
                 RTWysiwyg.start(Config.websocketURL,
                                 userName(),
-                                {},
                                 Nacl.util.encodeBase64(key.lookupKey).substring(0,10),
                                 key.cryptKey);
             editor.on('change', function () { rtw.onEvent(); });