Person teasers wrap content that isn't the photo #4310

Couldn't do this in the preprocess hooks that already existed.  Here's a tpl instead.  This places a person-teaser-wrapper class around the titel and content, but not image, of person nodes in teaser mode.
Merge pull request #4678 from openscholar/4310-person_teaser

Person teasers wrap content that isn't the photo #4310