Changed to use thumbnail for images as well as pdfs.  Additionally removed height so images would not get skewed
Merge pull request #47 from psu-stewardship/scm_33

Changed to use thumbnail for images as well as pdfs.  ...
initial impl of schema.org microdata for show view
Merge pull request #48 from psu-stewardship/schema.org

Initial schema.org impl for GF show view