Order terms in section table in chronological order.

Fixes: https://github.com/UWFlow/rmc/issues/67

The issue was that we were running _.each on terms, which was just an object so sometimes it would order the terms correctly, and other times not.

I changed it so we iterate on a list of sorted termIds, so it'll always stay chronologically.

Before:
![image](https://f.cloud.github.com/assets/808263/2302100/c8ef677a-a16b-11e3-925b-09efcca71b52.png)

After:
![image](https://f.cloud.github.com/assets/808263/2302104/eee39e9c-a16b-11e3-968e-9af102427c2b.png)