Cleaned up styles around image submissions

Brought Image Submissions in line with the guidelines laid out in ORA-646.  Screenshots attached.
![screen shot 2014-07-23 at 2 07 24 pm](https://cloud.githubusercontent.com/assets/7501476/3677750/7e08d4cc-1294-11e4-9dcf-4c8d4c29921e.png)
![screen shot 2014-07-23 at 2 07 39 pm](https://cloud.githubusercontent.com/assets/7501476/3677749/7e08452a-1294-11e4-8c63-319a3ec8a6e2.png)
![screen shot 2014-07-23 at 2 07 47 pm](https://cloud.githubusercontent.com/assets/7501476/3677751/7e08eb60-1294-11e4-98a3-338b78420fcc.png)
![screen shot 2014-07-23 at 2 08 29 pm](https://cloud.githubusercontent.com/assets/7501476/3677752/7e09182e-1294-11e4-85ca-54cadb8f14fb.png)