Slight design change for more intuitive adding of numbers

#### What's this PR do?
This fixes #374 (or at least takes a stab at it!)
Changes location of the "Plus" symbol next to the Phone Number field for more intuitive user experience

![screen shot 2014-12-13 at 8 52 05 pm](https://cloud.githubusercontent.com/assets/3967825/5426388/3d8b50fe-830b-11e4-9840-898be2231960.png)