Rewrite of the polls

[honzakral]

1. Denormalize questions and result onto the individual publishable objects - no reason to have everything as sepaate models

[xaralis]

+1 on this. Currently, its a mess and it needs a complete rewrite. Denormalizing sounds good.

Actually, it will be good to collect some requirements we expect and propose new solution for polls altogether.

[xaralis]

For us, we need:

• A basic poll - don't care if it's survey or Poll, my preference is get rid of one model
• Quiz
• Contest + Contestant