two small start-group form fixes 

### 1. fixes this field, which wasn't auto-populating the email feild  that was already supplied:

![image](https://f.cloud.github.com/assets/2665886/1104720/31c962c0-1907-11e3-9180-5fd4fe532a00.png)

### 2. replace a bloated placeholder with brief add description text (long text was moved to side-div)

![image](https://f.cloud.github.com/assets/2665886/1104756/0ee19dd4-1909-11e3-8695-4b1fd827b5d0.png)