Update demo site with content from 2014 project website

[bittner]

The current Organice Demo website has some irritating content.

Ideally, the demo site should be both a show case for potential solutions you can achieve with django Organice, and a presentation of the project. The 2014 Organice.io website was better at explaining the project, its goals and features.

Hence, the content of 2014 should be integrated as content of the demo site and updated where necessary.

[bittner]

Commit d3d0382 adds some of the more important content from 2014, today.

[bittner]

The demo website should also clearly mention what happens with the data (e.g. that no data is collected and that the site is rebuilt from scratch every day).