Inapropriate columns names when exporting

[RaphaelBe]

When exporting data from Axelor, columns names in the csv file are metaField name and not targetField name. So you can have multiple columns with the same name in your exported file. If you want to export your data to a new version of Axelor, you have to rename all fields name. I found that it's coded in AdvancedExportController.java but I don't reach to modify it.

It will be better to have "roles.name" in Titre field