Move handling of logging out in admin, to sso logout page.

core/admin/mailu/ui/templates/sidebar.html

@@ -130,7 +130,7 @@
       {%- endif %}
       {%- if current_user.is_authenticated %}
       <li class="nav-item" role="none">
-        <a href="{{ url_for('.logout') }}" class="nav-link" role="menuitem">
+        <a href="{{ url_for('sso.logout') }}" class="nav-link" role="menuitem">
           <i class="nav-icon fas fa-sign-out-alt"></i>
           <p>{% trans %}Sign out{% endtrans %}</p>
         </a>

core/admin/mailu/ui/views/base.py

@@ -11,14 +11,6 @@ import flask_login
 def index():
     return flask.redirect(flask.url_for('.user_settings'))
 
-@ui.route('/logout', methods=['GET'])
-@access.authenticated
-def logout():
-    flask_login.logout_user()
-    flask.session.destroy()
-    return flask.redirect(flask.url_for('.index'))
-
-
 @ui.route('/announcement', methods=['GET', 'POST'])
 @access.global_admin
 def announcement():