CSS from another project.

This should be a good start for the CSS we need to make the page look
decent.
Basic signup page.

I don't plan to track users' emails, so that's not part of the signup
process.

This may need to be revisited, if there is a problem with lost
passwords.
Logout option and page

Clear the session and go back to the index
Page header, forgot to add this with CSS
Bug fix, stupid typo
Cleaned up the auth functions
Cleaned up some SQL

Placeholders can be nice, and it's good to be consistent
Working index page

Bug fixes and login_page function