Split Balanced Payments section to make way for Coinbase

Fixes #2297, chipping away at `coinbase` a bit at a time. This applies the new redesign of Balanced Payments section in your profile.

**After merge**
![screen shot 2014-04-21 at 7 59 35 am](https://cloud.githubusercontent.com/assets/65468/2754140/e4143b6c-c94c-11e3-8c00-1548d6372491.png)

**Before merge**
![screen shot 2014-04-21 at 8 01 40 am](https://cloud.githubusercontent.com/assets/65468/2754141/e9ba219e-c94c-11e3-98b9-34d5ead93717.png)

Also, a thorough review of `connected-accounts.html` would be appreciated, as some things such as the Balanced Payments Dashboard links, were very different between `master` and `coinbase`.