upgrade theme and custom featured footer dark

Created by: flora8984461

One of https://github.com/EclipseFdn/jquery-eclipsefdn-api/issues/16

This site does not have a featured story, the signup to newsletter footer is a custom div.

For some sites such as openhwgroup.org and openadx.eclipse.org I do not need to add

show_featured_story: false
show_featured_footer: false

it will NOT show the features. But for this site, I need to make these settings for every page.

It seems that because the other 2 sites have the index.html in layout/ to override the default page? 🤔

Signed-off-by: Yi Liu yi.liu@eclipse-foundation.org