Changes

* Backup and how to manage Rocket.Chat data (e.g. mongodb and FS options)

* Backup and how to manage Rocket.Chat data (e.g. mongodb and FS options)

* <s>Fine tune various things (e.g. Security)</s>

* <s>Fine tune various things (e.g. Security)</s>

* Enable LDAP authentication

* <s>Enable LDAP authentication</s>

* <s>Create subdomain e.g. https://chat.yourdomain.com using the webapps-common contrib</s>

* <s>Create subdomain e.g. https://chat.yourdomain.com using the webapps-common contrib</s>

* Activiation/Notification emails are not sent, despite test success

* <s>Activiation/Notification emails are not sent, despite test success</s>

* <s>Upgrade Rocket.Chat</s>

* <s>Upgrade Rocket.Chat</s>

* Remove Rocket.Chat

* Remove Rocket.Chat