Hardening: load images only on click #2
Description
Currently images are loaded by default, if the user has not protected himself enough this would lead to the exposure of the ip address.
I propose a fix that will show a warning image by default that explains the risk.
On clicking the image you are shown a verify box, to make sure you really want to see the image.
When accepted, the external image is loaded.
Ideally this is included along with the patch for proxy support, so opening images in the client does not leak the real ip address of the receiver(s).