Update contact page with info on how to join the new mailing list.
Update contact page with info on how to join the new mailing list.

ucsb-wsg/ucsb-wsg.github.io,loganfranken/ucsb-wsg.github.io,ucsb-wsg/ucsb-wsg.github.io,loganfranken/ucsb-wsg.github.io,ucsb-wsg/ucsb-wsg.github.io,loganfranken/ucsb-wsg.github.io