Scans the source files for javascript class and resource references and
calculates the dependency tree

@param cb
function(cb) {
      var t = this;
      if (!this.__db) {
        this.__db = {};
      }
      async.parallel(
          [
            // Load Resources
            function(cb) {
              if (!t.__resManager) {
                cb(null);
                return;
              }

              t.__resManager.findAllResources(function(err) {
                if (err) {
                  cb(err);
                  return;
                }
                log.debug("found all resources");
                cb(null);
              });
            },

            // Find all classes
            function(cb) {
              async.each(t.__libraries,
                  function(library, cb) {
                    library.scanForClasses(err => {
                      log.debug("Finished scanning for " + library.getNamespace());
                      cb(err);
                    });
                  },
                  err => {
                    log.debug("Finished scanning for all libraries");
                    cb(err);
                  });
            }
          ],
          function(err) {
            log.debug("processed source and resources");
            cb(err);
          });
    }