Add feature user can change mail address

templates/base.html

@@ -21,6 +21,7 @@
       {% if current_user %}
         <a href="{{ url_for('write') }}">Write</a>
         {% if current_user.role == 'admin' %}<a href="{{ url_for('admin_users') }}">Accounts</a>{% endif %}
+        <a href="{{ url_for('change_email') }}">Email</a>
         <a href="{{ url_for('change_password') }}">Password</a>
         <span class="user-chip">{{ current_user.username }}</span>
         <form action="{{ url_for('logout') }}" method="post"><input type="hidden" name="csrf_token" value="{{ csrf_token() }}"><button class="text-button" type="submit">Log out</button></form>