Rework Brackets-InteractiveLinter extension for Bramble

[humphd]

From https://github.com/mozilla/thimble.mozilla.org/issues/1238#issuecomment-284078401, it would be cool to try and get https://github.com/MiguelCastillo/Brackets-InteractiveLinter working in Bramble.

The main problem is going to be swapping out the load files from the filesystem logic to instead use require() calls, and statically bundle all the things you need.

Whoever wants to try this, I can walk you through what needs to happen. It's not trivial, but it's not that hard.

[humphd]

@sgupta7857 is going to take this work over. I've got a PR up at #623 which he's going to finish, and we'll land it and have it be disabled by default. Then, I'll file another bug in Thimble to add a toggle to enable it if people want to use it.