Server: Send ETag for deleted lendings
Follow model changes in lending dialog
Handle 404 in BookDialog
Actually catch the 404 error
Also remove book from the model in that case
Fix book deletion
Catch 403 in BookDialog
Close lending dialog if book disappeared on update
Remove permisson debugging from auth.sh
Use If-None-Match for book reload
Prevent ETag overflow
Add limit to survive huge book selections
Create desktop file