Update Gateway (SMS Connection) View in CommConnect to match feedback

new pr from https://github.com/dimagi/commcare-hq/pull/3480
![screen shot 2014-05-22 at 6 38 51 pm](https://cloud.githubusercontent.com/assets/716573/3061169/5ab08276-e202-11e3-95fa-c94e5ffb5605.png)
![screen shot 2014-05-22 at 6 38 23 pm](https://cloud.githubusercontent.com/assets/716573/3061170/5ab0a4b8-e202-11e3-94eb-6f562bed0126.png)