Add localized Title/Description for Catalog generic purpose catalog entries (file-manager)

[rgaudin]

catalog.json needs to support i18n metadata ; at least for generic apps such as file-manager

[kelson42]

I wonder if this would not be better to handle this outside this json!?

[rgaudin]

Yes this is a draft-converted issue. the need is the localized strings. the mean is TBD.