Add .ackrc
TryMezzo.

- Add the ability to load files in the editor.
- Proper Makefile voodoo.
MezzoWeb.

- Catch output and show it in the console.
MezzoWeb.

Regenerate with the newer version of js_of_ocaml
MezzoWeb.

Somehow seems to work.
- There's a "too much recursion" error.
- Type errors are not caught and printed.
- Locations are not highlighted.
- There's a layout problem when error messages are too wide.