remove docgen remnants from repo, update CHANGELOG

utils/apidoc/mdn/search.js

-/**
- * Uses a Google Custom Search Engine to find pages on
- * developer.mozilla.org that appear to match types from the Webkit IDL
- */
-var https = require('https');
-var fs = require('fs');
-
-var domTypes = JSON.parse(fs.readFileSync('data/domTypes.json', 'utf8'));
-
-try {
-  fs.mkdirSync('output');
-  fs.mkdirSync('output/search');
-} catch (e) {
-  // It doesn't matter if the directories already exist.
-}
-
-function searchForType(type) {
-  // Strip off WebKit specific prefixes from type names to increase the chances
-  // of getting matches on developer.mozilla.org.
-  var shortType = type.replace(/^WebKit/, "");
-
-  // We use a Google Custom Search Engine provisioned for 10,000 API based
-  // queries per day that limits search results to developer.mozilla.org.
-  // You shouldn't need to, but if you want to create your own Google Custom
-  // Search Engine, visit http://www.google.com/cse/
-  var options = {
-    host: 'www.googleapis.com',
-    path: '/customsearch/v1?key=AIzaSyDN1RhE5FafLzLfErGpoYhHlLHeyEkxTkM&' +
-          'cx=017193972565947830266:wpqsk6dy6ee&num=5&q=' + shortType,
-    port: 443,
-    method: 'GET'
-  };
-
-  var req = https.request(options, function(res) {
-    res.setEncoding('utf8');
-    var data = '';
-    res.on('data', function(d) {
-      data += d;
-    });
-    var onClose = function(e) {
-      fs.writeFile("output/search/" + type + ".json", data, function(err) {
-          if (err) throw err;
-      console.log('Done searching for ' + type);
-      });
-    }
-    res.on('close', onClose);
-    res.on('end', onClose);
-  });
-  req.end();
-
-  req.on('error', function(e) {
-    console.error(e);
-  });
-}
-
-for (var i = 0; i < domTypes.length; i++) {
-  searchForType(domTypes[i]);
-}