Steven Silvester blink1073

When submitting an enhancement proposal, individuals will include the following information in their submission.

The problem that this enhancement addresses. If possible include code or anecdotes to describe this problem to readers.

A brief (1-2 sentences) overview of the enhancement you are proposing. If possible include hypothetical code sample to describe how the solution would work to readers.

A detailed explanation covering relevant algorithms, data structures, an API spec, and any other relevant technical information
A list of pros that this implementation has over other potential implementations.

A list of cons that this implementation has.

Notebook:

Config - creates it in USER as needed unless otherwise configured

NbExtensions - installs in system unless given --user or --sys-prefix

ServerExtensions - installs in user unless given --sys-prefix

Config and data default to user then sys-prefix, then system

	### Keybase proof

	I hereby claim:

	* I am blink1073 on github.
	* I am blink1073 (https://keybase.io/blink1073) on keybase.
	* I have a public key ASCDyw9ILX4MYwb0QEz0FoJCY3PcM49VZGetMmdcf3RsOAo

	To claim this, I am signing this object:

	import os
	import sys
	import time
	import errno
	import signal

	from winpty import PtyProcess

	from .exceptions import ExceptionPexpect, EOF, TIMEOUT
	from .spawnbase import SpawnBase

	from setuptools.command.develop import develop
	from setuptools.command.install import install


	class PostDevelopCommand(develop):
	"""Post-installation for development mode."""
	def run(self):
	fetch_yarn()
	develop.run(self)

	import * as path from 'path';
	function foo() {
	return import('leaflet').then(function (mod) {
	console.log(mod);
	});
	}
	;
	console.log(path);
	console.log(foo);

	0 info it worked if it ends with ok
	1 verbose cli [ '/Users/ssilvester/anaconda/bin/node',
	1 verbose cli '/Users/ssilvester/anaconda/bin/npm',
	1 verbose cli 'install' ]
	2 info using npm@5.5.1
	3 info using node@v6.10.2
	4 verbose npm-session 04f734b5bfb8fe65
	5 silly install runPreinstallTopLevelLifecycles
	6 silly preinstall @jupyterlab/application-top@0.11.1
	7 info lifecycle @jupyterlab/application-top@0.11.1~preinstall: @jupyterlab/application-top@0.11.1

	// Copyright (c) Jupyter Development Team.
	// Distributed under the terms of the Modified BSD License.

	import {
	Widget
	} from '@phosphor/widgets';

	import {
	IRenderMime
	} from '@jupyterlab/rendermime-interfaces';