Use collection title from results in the facet breadcrumb.

This will still return the ID on the zero results page, otherwise we would need to make an additional call to solr to get the title.

#### Before
---
![breadcrumb-before](https://cloud.githubusercontent.com/assets/96776/3631194/df332aa2-0eb3-11e4-82a5-e497164a178c.png)

#### After
---
![breadcrumb-after](https://cloud.githubusercontent.com/assets/96776/3631196/e13ddbb2-0eb3-11e4-9776-c48a90cc371b.png)