Remember user name

Change-Id: Ibccc786cd513510b08582e89605e74c02d8fceab
diff --git a/templates/layouts/main.html.ep b/templates/layouts/main.html.ep
index 0b68f9f..519229e 100644
--- a/templates/layouts/main.html.ep
+++ b/templates/layouts/main.html.ep
@@ -25,6 +25,9 @@
 
 % unless (user_auth) { # user not logged in
 % content_for 'sidebar', begin
+% if (flash('handle_or_email') && !param('handle_or_email')) {
+%   param(handle_or_email => flash('handle_or_email'));
+% };
 <fieldset>
   %= form_for 'login', begin
   <legend><span><%= loc 'login' %></span></legend>