Missing copy password error in case of session timeouts

[tilmanschweitzer]

If a session is not valid anymore, but a teamvault page is still open, it is not possible to copy passwords to the clipboard. This behavior is ok for security reasons, but the user gets no hint that the password is not copied. The only hint is the missing success message "Password has been copied to your clipboard.". Another problem is that the user usually never sees if a copied password is correct, as long as he copies it to password inputs.

The ajax request in the browser's network console shows a 403 (FORBIDDEN), but it would be great to have an big red error message ;-)