Fix full person display when default image is disabled.

#5732 

Addressing https://github.com/openscholar/openscholar/issues/5732#issuecomment-39991812

Output after fix in full view mode with no default picture:
![5732-fix](https://cloud.githubusercontent.com/assets/4497748/2664181/03adef74-c072-11e3-8d06-0c18a46e95ad.png)