fix form action tag

src/public/welcome.php

@@ -105,7 +105,7 @@ else if (isset($_POST['public']))
                   <p class="margin-b-8"><?php echo _('YGGtracker use Yggdrasil address to identify users without registration') ?></p>
                   <p class="margin-b-16"><?php echo _('following address could be shared with independent nodes to allow you manage own content everywhere') ?></p>
                   <h2 class="margin-b-16"><?php echo $user->address ?></h2>
-                  <form name="public" action="" method="post">
+                  <form name="public" action="<?php echo sprintf('%s/welcome.php', WEBSITE_URL) ?>" method="post">
                     <div class="margin-b-16">
                       <label class="text-color-green margin-y-8 margin-x-4" for="public-1">
                         <input type="radio" id="public-1" name="public" value="1" checked="checked" />