CSRF Protection (#235)

* Fix alert class name

* feature: csrf protection

* Cosmetics

* Fix token generate

* Admin Panel: changelogs csrf protection

* news/id route

* Refactor admin newses + add csrf

* Use admin.links instead

* Admin panel: Pages csrf

* Menus: better csrf + add success message on reset colors

* Plugins csrf

* Move definitions

* add info function, same as note($message)

* Update mailer.php

* Fix new page/news links

* clear_cache & maintenance csrf

* Formatting

* Fix news type

* Fix changelog link

* Add new changelog link

* More info to confirm dialog

* This is always true

system/templates/admin.pages.form.html.twig

@@ -3,7 +3,9 @@
 		<div class="card-header">
 			<h5 class="m-0">{% if action == 'edit' %}Edit{% else %}Add{% endif %} page</h5>
 		</div>
-		<form id="form" class="form-horizontal" method="post" action="?p=pages&action={% if action == 'edit' %}edit{% else %}new{% endif %}">
+		<form id="form" class="form-horizontal" method="post">
+			{{ csrf() }}
+			<input type="hidden" name="action" value="{{ action }}" />
 			{% if action == 'edit' %}
 				<input type="hidden" name="id" value="{{ id }}"/>
 			{% endif %}