[feat/secu] ajout du mailer ADM

See merge request !2

Objectif : éviter que les personnaes sachent la version de phpMailer utilisée

Amélioration de la configuration des mail pour infomaniak

Closes #5

See merge request !1

Needs to replay the php7_fpm role to add support to SVG
Updated nginx config for caldav
Added new phone region parameter in install

Remove submodule adminer_instance

www-data pool is still present deployed by default

Add logs

Instead of mailhog relevant on docker-compose envir

Update documentation

Add nodejs tag

Add update_inventory utility

Change owner and permissions, best should create a pool config per user

phpmyadmin / mailhog