Quiz - raises exception on website if quiz question isn't filled

[jezradek]

I understand that polls will be rewritten, so I'd like to mention some points from not only my point of view.

Well, polls should act more error-prone and editor-friendly.
For example creating new poll should be very natural and editor should be more informed by newman what is a status of his work.
Also he shouldn't be allowed to save the poll without filling a parts that may cause some error. For example if you don't fill question while creating quiz, it raises IndexError on webiste.

Finally I think that moving all validation to models, which was mentioned in different topic, is very good idea.