Log Message:
Update to glpi v9.4.2, with security and bug fixes.

- Security: prevent external redirections
- Fix some performances issues
- Fix various issues on plugins loading (cache conflict, bad locales)
- Fix display of documents in tickets
- Fix display of user's pictures
- Fix lost of some relations and sql errors when transferring items
- Feature: add Historical tab on config page
- And many more!

The full changelog is available:
https://github.com/glpi-project/glpi/milestone/32?closed=1