news/report_2018_01 contains images hosted in github

Originally created by @geb on #15476 (Redmine)

One user on xmmp was reporting that news/report_2018_01 (actually displayed in the frontpage) contains image hosted on github.

Maybe would it be possible to host them on boum.org ?

Feel free to reject if not relevant.

Edited May 15, 2020 by geb