make it possible to have username

views/account/account.php

@@ -25,6 +25,7 @@
             <hr>
             <?php /* TODO: disabled for the time being, email modification should be implemented */ ?>
             <input type="email" class="text big fullWidth" name="email" placeholder="Email address" value="<?= $user['email'] ?>" disabled>
+            <input type="text" class="text big fullWidth marginTop" name="username" placeholder="Username" value="<?= $user['username'] ?>" disabled>
             <input type="password" class="text big fullWidth marginTop" name="password_new" placeholder="New password" minlength="6">
             <input type="password" class="text big fullWidth marginTop" name="password_new_confirm" placeholder="New password confirmation" minlength="6">
             <p id="accountFormError" class="formError justify marginTop"></p>