Merge pull request #341 from noblehng/i18n/zh_CN

i18n: update Chinese(Simplified) translation
this fixes #343
update of third-party assets
Update messages.json
this fixes #342
this fixes #344
Update messages.json
Translated 0.9.9.0 new feature (French)
i18n: update Chinese(Simplified) translation for new feature in 0.9.9.0