Convert CoffeeScript to JS

[mi-wood]

It's probably time we solidify around just using JS. CoffeeScript is not a common language to use and it doesn't make sense to have two scripting languages at once (the map views use js for example)

I found https://decaffeinate-project.org/, which probably get's a lot of the easy stuff done, but will require finding what bugs that produces and patching them.

[stardust66]

I just tried out decaffeinate, and it works, except that it uses ES6, which Phantomjs and older browsers don't support. It's in the "assumptions" section of their conversion guide.

ariya/phantomjs#15287

Introducing ECMA will require nearly-complete rewrite and - keeping in m8ind I seem to be the only active dev of PJS now - will need to wait till other - more urgent - issues are solved.

What do you think about adding Babel so we can use decaffeinate and write more modern javascript while still having tests pass?

[mi-wood]

@stardust66 thanks for getting started on this! I would say go ahead and use babel if that's what you think is best. going to defer to your judgement since you've been working with the js the most

[tkwidmer]

i'm in favor of introducing ES6. This allows us to maybe eventually decouple the two.