Ability for user to add their own choices to a poll

If someone decides to work on this, they should take the following into account:
- Security: Currently we're allowing and rendering HTML in the choices
- Moderation? What if you suddenly get 100 people to submit garbage?

But with an autofill functionality so that when they start typing is will show other previous choices with similar verbiage so as to avoid duplicates.

Not sure if I like that too much. You would also need to write some access checks to verify you have access to that poll and you probably only want published results. I guess it's better to start off with a plain textfield.