* changelog: add changelog
* quick_jibri_installer.sh: increase support to 22.04
fix key aggregation and remove deprecated letsencrypt ppa
* etherpad-docker.sh: fix key aggregation and variable collection.
* grafana.sh: fix gpg key aggregation
* jm-bm.sh: tweak sed
* jra_nextcloud.sh: fix key aggregation and variable collection.
* jra_nextcloud.sh: fix add gpg key function and add install available version package
* jra_nextcloud.sh: small fix for install_aval_package function
* Use the original file, instead of overwrite the symlink.
* Fix typo and increase countdown.
* Add tool for grub setup.
* Require to run with sudo.
* Actually require to run with admin rights.
* Improve comments.
* Actually apply changes to nginx conf instead of symlink.