Bump python libs to match other images

(c) Copyright IBM Corp. 2016

Update stacks to current conda, python3.5, and add h5py

Fix letsencrypt in make-deploy example.

(c) Copyright IBM Corp. 2016

Stop the ubuntu base image from surfacing at the top level of github

Fix py4j version and path

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Bump to Spark 1.6.0 with Apache Toree

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* Use Spark 1.6.0
* Use Apache Toree (new name/home of ibm-et/spark-kernel)
* Add missing pub key for binary
* Add SHA check for spark package download

(c) Copyright IBM Corp. 2016

Set PYSPARK_PYTHON path in python2 kernelspec

(c) Copyright IBM Corp. 2016

(c) Copyright IBM Corp. 2016

* Install python2 spec to CONDA_DIR instead of system prefix too

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(c) Copyright IBM Corp. 2016

Move to "internal" folder

(c) Copyright IBM Corp. 2016

Added ubuntu:14.04 locale fix

Bump kernel gateway to 0.3.1

Also change CMD vs ENTRYPOINT to match what minimal-notebook
and some major official Docker images do (redis, mysql, nginx, ...)
by having the jupyter kernelgateway in the CMD, and just tini --
in the entrypoint

(c) Copyright IBM Corp. 2016

Notebook 4.1.x

(c) Copyright IBM Corp. 2016

(c) Copyright IBM Corp. 2016

(c) Copyright IBM Corp. 2016

Also fix copyright headers on various files

Remove build deps from minimal-kernel image

(c) Copyright IBM Corp. 2016

* Use setuptools to get modern pip (debian packaged pip stops
  working after requests gets updated)
* Don't use wget to fetch tini, use Python!

(c) Copyright IBM Corp. 2016

* Remove SHELL env var and leftover USER nobody
* Install wget for tini then immediately uninstall it
* Install build-essentials and python3-dev for tornado speed up
  then immediately uninstall them

(c) Copyright IBM Corp. 2016

First time we've added a stack under the new versioning scheme

(c) Copyright IBM Corp. 2016

(c) Copyright IBM Corp. 2016

New docker stack for a headless kernel

Contribution (c) Copyright IBM Corp. 2016