D8CORE-7212 Use h3 header for cards in teasers when appropriate'

[pookmish]

• D8CORE-7212 Add h3 card display mode and configure for each content type
• Started acceptance test
• Update course and event card configs

NOT READY FOR REVIEW

• (Edit the above to reflect status)

Summary

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Criticality

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Review Tasks

Setup tasks and/or behavior to test

1. Check out this branch
2. Rebuild Cache and import config drush cr ; drush ci
3. Navigate to...
4. Verify...

Site Configuration Sync

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Front End Validation

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Backend / Functional Validation

Code

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General

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Resources

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