Add translator comment for string "Export Exif metadata by default"
Description of the bug
I'm translating GIMP into spanish. We (the coordinator and I) are not very clear about the meaning of a sentence and we would like you to explain it for us.
The sentence is: "Export Exif metadata by default"
The problem is I think the meaning is: metadata (of X type) is exported by default and my coordinator translated as if the default metadata is exported. Which is the default? The metadata or the action of importing?