disable 'online' check. too many false positives to be useful. closes #719...

disable 'online' check.  too many false positives to be useful.  closes #719 (@shane-tomlinson - I went for a minimal fix given we're branching the beta train right after this commit.  feel free to clean up)

resources/static/dialog/controllers/dialog.js

@@ -48,7 +48,7 @@ BrowserID.Modules.Dialog = (function() {
       sc;
 
   function checkOnline() {
-    if ('onLine' in navigator && !navigator.onLine) {
+    if (false && 'onLine' in navigator && !navigator.onLine) {
       this.publish("offline");
       return false;
     }