Democracy.

This implements **TOTALLY HONEST DEMOCRACY**

## The Road To Freedom

  * [x] Basic `Vote` skeleton
  * [x] Expiry
  * [x] Rate and voter limits
  * [x] A useless thing to vote on (`Hubot: vote poop`)
  * [x] Vote to change topic
  * [x] Useful help
  * [x] Progress update (`Hubot: voting?`)

## Non-core

  * [ ] Limit voting to regulars (Present for time before vote?)
  * [ ] Vote to kick
  * [ ] Protect The People's Party