Multimedia on home/landing page needs fallback rules implemented for videos

[lburack]

The fallback rules (per #935) for videos in the multimedia row are not implemented. I added a video that did not have a caption filled in, but did have a feature card description, and it displayed nothing.

This ticket is to implement the video fall back rules as indicated in #935 (#1903)

Rules for Video Card:

• Display no title
• Caption text rules:
  • If it has caption and it is not empty, use that.
  • If it has Feature Card Description use that
  • Use page description? (technically, it is the long description in Percussion, which will move into meta description or list description depending on the other data)

[andyvanavery31]

Outdated by Home & Landing Page redesign.