Merge pull request #600 from emmanuel-keller/master

Restore production environment
Merge pull request #601 from emmanuel-keller/master

production header in fr doc
Merge pull request #604 from emmanuel-keller/master

Fixed Debian guide
Update delete%7Cdeleting_an_auto-completion_item%7C5.md

Minuscule word fix.
Update query%7Cmake_an_auto-completion_query%7C4.md

Minuscule word fix
Update put_json%7Cinserting_documents_using_JSON%7C1.md

Minuscule word fix
Update put_text%7Cinserting_documents_using_text_format%7C3.md

Small fixes for clarity, confirmation requested @ ekeller.
Merge pull request #608 from emmanuel-keller/master

Bug fix and libraries upgrade