This change also adds a warning to the hard-delete prompt that deleted
books should first be archived if the Kobo Sync feature is enabled.
An alternative would be to keep a permanent record of hard-deleted
book.
them to the KoboStore for books that aren't in Calibre.
Note: There's still an edge case where a book is removed from Calibre
without first being archived, in which case the delete call will fail.
functionanility is lost by overriding the api_endpoint setting.
Requests are either:
* Redirected to the Kobo Store
* Proxied to the Kobo Store
* Proxied to the Kobo Store and merged with results from CalibreWeb.
Instead, the user generates the api_endpoint url to set on their device
by visiting http://.../kobo_auth/generate_auth_token.
The generated url will contain a RemoteAuthorizationToken that will be
included on all subsequent requests from the device to the kobo/
endpoints. (In contrast, the device is authenticated using a session cookie on
requests to the download endpoint).
Also use Flask.url_for to generate download urls.
Michael Shavit