Symfony 2
https://symfony.com
Copyright (c) 2004-2017 Fabien Potencier
Symfony is released under the MIT license.

Free FatCow-Farm Fresh Icons
http://www.fatcow.com/free-icons
License: Creative Commons Attribution 3.0 License

Used files:
ask_and_answer.png
auction_hammer_gavel.png
database_save.png
door_out.png
house.png
page_world.png
picture_add.png
user.png

Bootstrap v4.0.0
https://getbootstrap.com
Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

Bootstrap v4.0.0
http://ckeditor.com
Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.md or http://ckeditor.com/license

jQuery v3.3.1
http://jquery.org
(c) JS Foundation and other contributors | jquery.org/license

Popper.js
https://popper.js.org
Copyright (C) Federico Zivolo 2017
Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).

FullCalendar
https://fullcalendar.io/
Copyright (c) 2015 Adam Shaw
The standard release of FullCalendar is released under the MIT License