Added questions and answers; scaffold for the former, only model for the latter. Also added nested_forms gem to ease creation of answers. Beautified a lot more stuff, added link for question creation (only accessible for admins), generally overhauled the entire thing a bit. Not everything works right now, but this is a dev branch and I'm f...ing tired.
Sooooo many changes. Beautification of tons of stuff has happened, we now have a bit more functionality for admins and a few more forms. Also the data model for questions and answers is complete and questions can be added with answers and answers can be marked as being correct. Deletion is also possible. I'm sure I'm forgetting quite a few things right now. Next steps are: Implement a functionality to become an admin via a global password and then, of course, the quiz functionality itself.