Add no_image_teaser to view modes for the LOP widget.

#5347 

Adding the "no_image_teaser" view mode to the LOP widget:
![selection_194](https://f.cloud.github.com/assets/4497748/2206571/b5fb302c-9964-11e3-8c59-a580fd5fe61a.png)

The LOP widget with the person content type:
![selection_197](https://f.cloud.github.com/assets/4497748/2206639/daec65d0-9965-11e3-85c1-77ba2168786a.png)