Delegate page cleanup, displaying public_data fields

In response to discussion here: https://bitsharestalk.org/index.php?topic=11485.0 I've cleaned up the delegate page a little and most importantly added some public_data fields. 

I've defined some default "roles" for a delegate as indicated in the forum post, they could easily be expanded or changed as necessary. 

The current fields used are: public_data.website, public_data.delegate : {role, description, proposal, location, handle, ann}

![delegate1](https://cloud.githubusercontent.com/assets/6890015/5095459/2845b2a2-6f6a-11e4-8f1a-dc2f82218eb1.png)

![delegate2](https://cloud.githubusercontent.com/assets/6890015/5095472/3e2751f2-6f6a-11e4-9d65-ee749b1f6b0b.png)