Move product communication section to it's own page.
The product handbook page is too long, this moves the communication to its own page.
There's a lot of content on this page that needs to be updated, but we should do so in small iterations.
This iteration just moves the page as-is so that it's a non-controversial change that can be merged right away and make future changes easier. (since reviewing 1 smaller page is easier than a huge monolith product page)
Edited by William Chia