Remove leading space from photo caption

https://app.asana.com/0/21826111570917/21947526717524

Before and after:
![screen shot 2014-12-10 at 09 36 07](https://cloud.githubusercontent.com/assets/4643064/5373643/038eb8fe-8050-11e4-89c8-d8dedbba2d80.png)
![screen shot 2014-12-10 at 09 36 20](https://cloud.githubusercontent.com/assets/4643064/5373644/03b1fc74-8050-11e4-84e0-4bdeb8c17117.png)