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/forum.add_board.html.twig

@@ -1,4 +1,5 @@
 <form method="post" action="{{ link }}">
+	{{ csrf() }}
 	{% if action == 'edit_board' %}
 	<input type="hidden" name="id" value="{{ id }}" />
 	{% endif %}
@@ -44,4 +45,4 @@
 			</td>
 		</tr>
 	</table>
-</form>
+</form>