Jl comment help

Some improvements/things left:
- ui feedback is currently un-animated. Might be worth adding some kind of animation if you're interested.
- need some way to get current user's name to add to the comment (see my note in the javascript controller)
No, this is the kind of interface trick that we talked about at some point. You make the javascript push the information to the array on the client side so you don't have to wait for a server load to show the new content. It's the most reliable solution for what you're trying to do. See the comment on line 74 for what I was intending.