Now will calculate usage as (total - avail).
In Linux, ext filesystems by default reserves 5% of the space to be
usable by root, making them essentially already "used" space.
Originally we didn't take that into account.
Disk usage percentage will now round down: Math.round() -> Math.floor().
The general behavior in other tools such as "df".
node-fetch: 2.6.0 -> 2.6.1 (security)
browserslist: 4.14.0 -> 4.14.1
stylelint: 13.6.1 -> 13.7.0
Obligatory bump to versions.json as this commit requires rebuilding
client assets (dev dependencies updates affect style.css).
As usual, rebuilds will be in the next commit by the build bot.
Also updated bump-versions.js to NOT require utilsController.js.
This is required to make sure GitHub runner can execute the script
without config.js existing in root directory.
To begin with the script don't particularly need anything much from the