Create a sitemap for current torproject.org website

During the Tor Dev Meeting in Berlin 2015, we decided on new information structure for torproject.org website: https://trac.torproject.org/projects/tor/wiki/Website/MainSiteRedesign

We also had some suggestions on what to do with the content that we were removing from the homepage.

The goal of this task is to map all the current content on torproject.org so we can make sure we are not forgetting any page and we have a plan for everything we are moving out of it.