Minor grammar fixes
[3.8.4] Webhooks in Glossaire addition for 3.8.4.
Merge pull request #118 from anthonycabot/3.8

3.8 - Fix grammar in Configuration.rst
Removing Traduction paragraph & link reference in Contrib/index.rst ; because outdated.
Merge pull request #119 from anthonycabot/3.8

Removing Traduction paragraph & link reference in Contrib/index.rst ; because outdated
Removing Translation paragraph and launchpad link (outdated)
Introducing Phraseanet and an about this doc paragraph in english.
Merge pull request #121 from anthonycabot/3.8

3.8 : Introducing Phraseanet and an about this doc paragraph for english docs.
Remove Contrib references in English
Updating Filigrane with corresponding command line for update
Updating FAQ

Activer ftp
Filigrane
Merge pull request #125 from anthonycabot/3.8

3.8 : Updating FAQ for Filigrane, Activer-ftp
Autoriser une application tierce à se connecter à un compte Phraseanet.
Ajouter application...
Merge pull request #127 from anthonycabot/3.8

3.8 : Autoriser une application tierce à se connecter à un compte Phraseanet
Add API changelog
Address @anthonycabot comment's