I added a new feature based on a patch I got from David Saez Padros from Spain. If someone adds a new question it will be first checked against the questions and answers in the system. This patch reduces duplicates in the open questions section. I also fixed some bugs.
Update:
I began to rewrite the whole PDF export into one class with
- support for bold, italics, underlined text
- support for images
- basic support for tables
- support for lists <li>
- <pre> will be displayed using Courier font
- support for <br>, <br /> and <p>
- support for <hr> and <hr />