removed most comments from Queue.js (easier to read without them)
fixed bug in my new enqueue_array function in Queue.js
removed initial json fetching tests from client and handler
fixed bug in Queue.enqueueArray
got enqueuing of downloaded json worlds going

(fair amount of hacky debugging stuff in there now)
got animation going in the browser -- extremely hacky and full of debugging statements
got rid of debugging statements in handler
more work on animation in browser

removed some debugging statements
changed the size of the robots
added more reporting of time, animation rate and
   simulation rate