Structured comments take 1

First round of testing structure comments.
This is a NextGenX only feature and will be enforced with the `-sp-` functionality.
This work is piggybacking on the open module for now, but, if it proves good, will probably be built into Composer.

Editors will now be able to lead a conversation and receive information back as to how the readers feel.

## Hush now, show me
![structured-comments](https://cloud.githubusercontent.com/assets/31692/3458135/77f99f40-01fe-11e4-9b85-9d719ea4a6c3.png)
You may want to make these focusable for keyboard users