QI 1.2.1 : fr/qi.php

- Ajout des dernières corrections entre 1.2.1-RC2 et la version 1.2.1

Changed version to 1.2.0

Merge branch 'master' of https://github.com/phpbb/quickinstall

Bump the version number.

Bump the version and update the changelog.

Time to bump the version.

Updated the changelog, it is time for a new release.

Updated version number.

Added last changes to the changelog.

Edited changelog