Display OSC detail like existing category collections (bug 927471)

Previous discussion: https://github.com/mozilla/fireplace/commit/ee884218e96e1c67deaf3756163c2c6b4a79c9bb

r? @mattbasta @cvan @spasovski

# Screenshots

## OSC

![osc-small](https://f.cloud.github.com/assets/23885/1346062/8690001a-369a-11e3-8ad4-bf27148bae88.png)
![osc-large](https://f.cloud.github.com/assets/23885/1346064/88d5290e-369a-11e3-875a-959d902a0029.png)

## Other collection
![reg-small](https://f.cloud.github.com/assets/23885/1346066/8ccbcca2-369a-11e3-8cca-7bc816e7ddf8.png)
![reg-large](https://f.cloud.github.com/assets/23885/1346068/8ed6544a-369a-11e3-8705-05f030af6cfb.png)