Make commenting less prone to spam

[michaelwechner]

One can add comments to pages, e.g.

http://127.0.0.1:8080/yanel/yanel-website/en/about.html

or rather

http://127.0.0.1:8080/yanel/yanel-website/usecases/add-comment.html?path=/en/about.html

We explicitely allow people to comment without having to register, but the problem is that this attracts a quite a lot of spam.

In order to prevent spam, we would like to do two things

• Use Javascript (see contact form) and/or CSS (http://klauskjeldsen.dk/avoid-html-form-spam-using-css/)
• One needs to confirm comment via email