feature: edu news detail component

[stephiescastle]

Checklist

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Description

Supports https://github.com/nasa-jpl/www/issues/28

Adds:

• Share Buttons EDU component w/ stories
• EDU News Detail component w/ stories

Notes:

• I put the Storybook story with the component file. This makes development much easier, and I'm considering doing the same for all vue stories. See Co-locate css and story files with vue components #463

Caveats

The "Google Classroom" share link isn't complete (getting clarification).

Instructions to test

1. make storybook
2. View http://localhost:6006/?path=/story/components-edu-sharebuttonsedu--default&globals=theme:ThemeEdu
3. View http://localhost:6006/?path=/story/templates-edu-pageedunewsdetail--edu-news-detail&globals=theme:ThemeEdu

Tested in the following environments/browsers:

Operating System

• macOS
• iOS
• iPadOS
• Windows

Browser

• Chrome
• Firefox ESR
• Firefox
• Safari
• Edge