chat: show images in attachments: - if an image is received from somebody in roster, it is automatically displayed (we display only for people in roster to avoid IP address leak) - encrypted files are decrypted and stored in cache before being displayed - GIFs image are shown as attachment because they are badly handle in Kivy (images frequencies is not handled correctly, and memory consumption explode). Instead, a click on it will open the GIF in the appropriate software of the platform. - a click on an attachment image will open it in the gallery

This directory include files backported from unreleased versions of Kivy until
they are actually released. Note that the LICENSE in this directory apply only
to this directory, other files follow general Cagou license specified in root
directory's COPYING (AGPL v3+).

The files here (except __init__.py) comes from Kivy repository (https://github.com/kivy/kivy) and are
copyrighted to their respective authors

"__init__.py" is part of Cagou and licensed under the same license (see root COPYING).