[boost] Library list generated from meta/libraries.json files

I've put a library list generated from the meta/libraries.json files, at: http://www.pdimov.com/tmp/boost/index.html Library authors may wish to take a look at their library entry and see if they're happy with it. What I've noticed so far is that many libraries are missing the boost-version (First Release) entry, and that Config is missing authors for some reason. The other thing is that the category names in the json files are the internal identifiers, which I've left as-is, as I didn't want to hardcode a mapping. We'll have to decide whether to use the proper names in the json files, or whether to have a separate categories.json with the mapping somewhere. I tend towards the first option.