Papa Dragon

Hi all, Yes, if we could just put something like `ynh_mysql_db_shell < $install_dir/src/sql/schema_mysql.sql` in the YunoHost package install script, that would be really nice!

Made a few tests using different YunoHost package versions, found out that video uploads in Firefox stopped working somewhere between upstream commits [5ed9da6](https://github.com/joinloops/loops-server/commit/5ed9da65a0694abf4639cc524638a25788f16c78) and https://github.com/joinloops/loops-server/commit/ec408dd7013978c0dfad4e8b3f619fab98ee02ee

Bug also present in Firefox in Linux (Mint)

Upload is now possible with Firefox (Linux Desktop), after updating the instance to v1.0.0-beta.5.