Update Weston testing information
Once weston!287 (merged) is merged, replace the Weston stuff in https://wayland.freedesktop.org/testing.html with a link to https://wayland.pages.freedesktop.org/weston/ .
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
Once weston!287 (merged) is merged, replace the Weston stuff in https://wayland.freedesktop.org/testing.html with a link to https://wayland.pages.freedesktop.org/weston/ .