Add issues based on cdc.md

[AodhAnd]

Adding issues from the todo list in cdc.md could help getting them done by any motivated developer, instead of hiding them in an obscure file..

[Nodraak]

Todo / ideas list:

• [ ] Add tags to publications
• [ ] Add a pdf export of the publications (with pandoc)
• [ ] Multi-author publications
• [ ] Add filters for the list of events (upcoming, past)
• [ ] Fix the two failing tests
• [ ] Think about adding django cms
• [ ] Write pages about IRC
• [ ] Fix foundation-icons.css which cant be compiled by some version of compass