Existing username check now working, error box showing and hiding properly, UI tweaks

controllers/user.js

@@ -191,9 +191,11 @@ exports.checkUniqueUsername = function(req, res) {
 exports.checkExistingUsername = function(req, res) {
     User.count({'profile.username': req.params.username.toLowerCase()}, function (err, data) {
         if (data == 1) {
-            return res.send(false);
-        } else {
+            debug('sending false back')
             return res.send(true);
+        } else {
+            debug('sending true back')
+            return res.send(false);
         }
     });
 };