Delivery Backup

[widoz]

Actually the deliver_backup  is used inside the Exporter class.

May I suggest to move it within an own class, so we can use it without need to instanziate the Exporter?

This because the method is called only within the FileDownloader.
If it's possible I suggest something like this

SearchReplaceModal => A class that implements the show_changes and show_modal separating data from presentation.

Gizipper => A class to zip files.

FileDownloader => DownloadHandler
- Take the request for a file, get a BackupDeliver instance and call deliver to perform the action.
- Make method trim_search_results a generic function.
- Remove the show_changes and show_modal and hook the class somewhere else.
-- The modal is used in different context, not only when we want to download a file but even in
dry mode.

BackupDeliver => Actually will be the deliver_backup logic as a class.
- take an instance of Gzipper to gzip the file if needed