Additional fixes for menu items related to news and press

A few additional places where the news and press pages were not
properly menu integrated. This fixes various inconsistencies and
missing category and submenu markings in menus.

Fix minimal start of ourcoverage.html and correct various problems

ourcoverage.html was a reasonable minimal start but not really ready
for production. Make changes necessary to put this into production,
as follows:

* Rename ourcoverage.html to vizio-coverage.html. This is just
Vizio coverage for now.

* Order articles by most in-depth/interesting. Verified this
ordering by consensus with Conservancy staff.

* mailto: link for press coverage on the main inthenews page, but
don't use that on Vizio page; it's unlikely we'll miss any of the
Vizio coverage.

* use — instead of -

* put quotes around article titles.

* Add missing PR Web article

* Switch from <p>'s to <li>'s in vizio-coverage.html

* Fix menu issues. 09a4b02 outlined the issues regarding how to
add items to menu; it does require a CSS change as explained
therein; merely using the right `base_` is not enough

* Improve menu integration. Per PR people's recommendation, the
Vizio stuff that also goes in other areas needs to be placed in
multiple menus.

fixup /press from Hannahs notes

a few s/supporters/sustainers/
add link to inthenews
update news and press menu

add /press and make that kit page

fix urls for press and learn
start work on new news partial submenu