Sorry for the delay in replying to this — I have been really busy lately. I can see the menu items you’ve added; maybe the static pages were not updated when you checked? If a change you’ve made does not seem to appear, try doing Shift + Refresh on the page in question.
I checked the menu items for Building B2G OS and Building for Fairphone, and the links seemed to be wrong. I’ve fixed them now, so they link to the correct places.