Removing Unknown attribute error when a trophy is show on the profile page


![screen shot 2014-08-06 at 7 50 26 am](https://cloud.githubusercontent.com/assets/1599081/3827114/20c762e8-1d6a-11e4-8f5c-75f88b94a513.png)

Nothing ever responds to `has_model_ssim` you should check `doc.key? 'has_model_ssim'`. Even better would be to test `doc.hydra_model == 'Collection'`