Feat/tup 568 change date design

[wesleyboar]

Overview

Redesign the date for news articles. (Missing pieces from #767.)

Related

• TUP-568
• completes #767

Changes

• changed date style on article page
• changed byline and date layout
• changed byline and dates markup — moved dates to their own list

Testing

1. Open News article and News list.
2. Verify that the date on both pages:
   • has the same style
3. Verify that the byline on list page:
   • (unchanged) is left-aligned underneath category
4. Verify that the byline on article page:
   • (new location) is left-aligned to the right of category

UI

list page	article page

list page - grid	article page - grid