Release 3.0.0

Implementation of middleware, in particular for injecting headers in the http response.
Output changes in case exceptions are called.
Implementation of the JWT technology.
Upgrade to Bootstrap 4.
Upgrade to jQuery 3.3.1.
Updating of the administrative area.
Modification of the management of the url aliases.
Update MooTools 1.6.0 with the removal of some MooTools More modules.
Implementation of the data_type option in the characteristics of the fields related to the input forms. The option allows to correctly manage the display of particular values of a field (for example regular expression) in the input form.
Update CKEditor to version 4.11.2.