Provide the md5sum of releases' zip archive on the download page

[ttoine]

Once a build is released, the installer of the software is available on GitHub and on the Download.

At the moment, the md5sum of the zip is not visible on the download channels, and only available to the auto upgrade plugin.

This information should be public, to allow anyone who download the software to check that they have an original/genuine archive (non modified)

[matks]

@eternoendless I'm seeing some interesting usage for this information.

Is there some warning against publishing this list publicly ? Or is it ready to be done, waiting for someone to do it ?

[ttoine]

note that this is a common practice in a loooot of project to share an md5sum of archives of disk images.