Clean up

Signed-off-by: Thomas Wagner <twagner@ivlab.com>
Add space below left teaser pic on Publications list page

- Listings with 2 lines or less text tend to allow the teaser picture to crowd the bottom of the box.  Added margin bottom to correct that. Does not effect boxes with more content.

- misc cleanup

Signed-off-by: Thomas Wagner <twagner@ivlab.com>