gh754: Don't default to video metadata in the new editor
Expand/Collapse both metadata sections together.

I've been meaning to fix this one for a while, and wanted to sneak it
in since I was already working with the metadata section.
gh719: fix alignment of rows in the new editor.

We were forcing the text fields to have at least 2 rows in them.  This
was another fix that I wanted to sneak in.