Running Slicer on headless server (Installing Extensions and more...)

[jcfr (Jean Christophe Fillion Robin (Kitware))]

@lassoan

Unfortunately, the server is temporarily overloaded from time to time

Indeed, the server is currently on “life support” (we need to allocate resources to transition it), in the meantime I will make sure it is restarted on daily basis (9pm EST)