Since there is no other way to enable hidden files, it seems better to
enable it by default otherwise there are some folders/files you simply
can never open from the dialog.

* Set NODE_ENV and VERSION when building

Should fix the version flag not reporting correctly as well as enable
the service worker and prevent the 404 hmr requests again.

* Log env vars

To help make sure it's built correctly when looking at the Travis logs.

Since this will be a path in the binary that we don't want to create on
the user's system. I also removed the option to override it; it doesn't
seem like a great idea since you'd always want those builtin extensions.
This way we also don't have to check if the option was passed and only
create it if that was the case.

This isn't a real error event; we artificially emit it just in case
something waiting to start is listening to the error event in order to
clean up and/or restart.

* Allow setting paths for builtin exts and extra dirs

The extra directories aren't used yet, just available from the
environment service and to the shared process.

* Utilize extra builtin extensions path

* Utilize extra extensions directory

* Fix cached mtimes for extra extension dirs

* Simplify extension cache equality check

Old Version contained a deprecated flag

Fix macOS release

Rename codercom/code-server to cdr/code-server

expose terminal service in IDE API

Will need in sail.

Remove chmod on project dir

Modifying the object didn't feel quite right, plus this makes the code a
bit more compact.

Fixes #579.

- Remove size from directories (often always 4K and not very useful).
- Format file sizes to be more human-readable.

* Implement write/read buffers in electron fill

This makes cutting and copy files from the file tree work.

* Implement fs.createReadStream

This is used by the file tree to copy files.

* Allow passing proxies back from client to server

This makes things like piping streams possible.

* Synchronously bind to proxy events

This eliminates any chance whatsoever of missing events due to binding
too late.

* Make it possible to bind some events on demand

* Add some protocol documentation

* Fix hash

* Remove whitespace

* Let people know when telemetry is disabled, change url to https if secure connection

* Remove --no-auth as a http candidate

* Rename variable, change let to const