Backport PR #1822: Convert readthedocs links for their .org -> .io migration for hosted projects

As per [their blog post of the 27th April](https://blog.readthedocs.com/securing-subdomains/) ‘Securing subdomains’:

> Starting today, Read the Docs will start hosting projects from subdomains on the domain readthedocs.io, instead of on readthedocs.org. This change addresses some security concerns around site cookies while hosting user generated data on the same domain as our dashboard.

Test Plan: Manually visited all the links I’ve modified.

Signed-off-by: Min RK <benjaminrk@gmail.com>

README.md

@@ -2,7 +2,7 @@
 
 [![Google Group](https://img.shields.io/badge/-Google%20Group-lightgrey.svg)](https://groups.google.com/forum/#!forum/jupyter)
 [![Build Status](https://travis-ci.org/jupyter/notebook.svg?branch=master)](https://travis-ci.org/jupyter/notebook)
-[![Documentation Status](https://readthedocs.io/projects/jupyter-notebook/badge/?version=latest)](http://jupyter-notebook.readthedocs.org/en/latest/?badge=latest)
+[![Documentation Status](https://readthedocs.org/projects/jupyter-notebook/badge/?version=latest)](https://jupyter-notebook.readthedocs.io/en/latest/?badge=latest)
 
 The Jupyter notebook is a web-based notebook environment for interactive
 computing.
@@ -24,9 +24,9 @@ discrete repos.
 
 ## Installation
 You can find the installation documentation for the
-[Jupyter platform, on ReadTheDocs](http://jupyter.readthedocs.io/en/latest/install.html).
+[Jupyter platform, on ReadTheDocs](https://jupyter.readthedocs.io/en/latest/install.html).
 The documentation for advanced usage of Jupyter notebook can be found
-[here](http://jupyter-notebook.readthedocs.io/en/latest).
+[here](https://jupyter-notebook.readthedocs.io/en/latest/).
 
 For a local installation, make sure you have
 [pip installed](https://pip.readthedocs.io/en/stable/installing/) and run:
@@ -122,7 +122,7 @@ jupyter notebook
 ## Resources
 - [Project Jupyter website](https://jupyter.org)
 - [Online Demo at try.jupyter.org](https://try.jupyter.org)
-- [Documentation for Jupyter notebook](http://jupyter-notebook.readthedocs.io/en/latest/) [[PDF](https://media.readthedocs.io/pdf/jupyter-notebook/latest/jupyter-notebook.pdf)]
-- [Documentation for Project Jupyter](http://jupyter.readthedocs.io/en/latest/index.html) [[PDF](https://media.readthedocs.io/pdf/jupyter/latest/jupyter.pdf)]
+- [Documentation for Jupyter notebook](https://jupyter-notebook.readthedocs.io/en/latest/) [[PDF](https://media.readthedocs.org/pdf/jupyter-notebook/latest/jupyter-notebook.pdf)]
+- [Documentation for Project Jupyter](https://jupyter.readthedocs.io/en/latest/index.html) [[PDF](https://media.readthedocs.org/pdf/jupyter/latest/jupyter.pdf)]
 - [Issues](https://github.com/jupyter/notebook/issues)
 - [Technical support - Jupyter Google Group](https://groups.google.com/forum/#!forum/jupyter)

docs/source/conf.py

@@ -328,7 +328,7 @@ texinfo_documents = [
 
 intersphinx_mapping = {
     'ipython': ('http://ipython.org/ipython-doc/dev/', None),
-    'nbconvert': ('http://nbconvert.readthedocs.org/en/latest/', None),
-    'nbformat': ('http://nbformat.readthedocs.org/en/latest/', None),
-    'jupyter': ('http://jupyter.readthedocs.org/en/latest/', None),
+    'nbconvert': ('https://nbconvert.readthedocs.io/en/latest/', None),
+    'nbformat': ('https://nbformat.readthedocs.io/en/latest/', None),
+    'jupyter': ('https://jupyter.readthedocs.io/en/latest/', None),
 }

docs/source/examples/Notebook/Distributing Jupyter Extensions as Python Packages.ipynb

@@ -120,11 +120,11 @@
     "## Additional resources on creating and distributing packages        \n",
     "\n",
     "> Of course, in addition to the files listed, there are number of other files one needs to build a proper package. Here are some good resources:\n",
-    "- [The Hitchhiker's Guide to Packaging](http://the-hitchhikers-guide-to-packaging.readthedocs.org/en/latest/quickstart.html)\n",
+    "- [The Hitchhiker's Guide to Packaging](https://the-hitchhikers-guide-to-packaging.readthedocs.io/en/latest/quickstart.html)\n",
     "- [Repository Structure and Python](http://www.kennethreitz.org/essays/repository-structure-and-python) by Kenneth Reitz\n",
     "\n",
     "> How you distribute them, too, is important:\n",
-    "- [Packaging and Distributing Projects](http://python-packaging-user-guide.readthedocs.org/en/latest/distributing/)\n",
+    "- [Packaging and Distributing Projects](https://python-packaging-user-guide.readthedocs.io/distributing/)\n",
     "- [conda: Building packages](http://conda.pydata.org/docs/building/build.html)\n",
     "\n",
     "> Here are some tools to get you started:\n",

docs/source/extending/contents.rst

@@ -214,6 +214,6 @@ ContentsManager.
    directories as SQL relations.  PGContents also provides an example of how to
    re-use the notebook's tests.
 
-.. _NBFormat: http://nbformat.readthedocs.org/en/latest/index.html
+.. _NBFormat: https://nbformat.readthedocs.io/en/latest/index.html
 .. _PGContents: https://github.com/quantopian/pgcontents
 .. _PostgreSQL: http://www.postgresql.org/

docs/source/index.rst

@@ -7,9 +7,9 @@ The Jupyter notebook
    :caption: User Documentation
 
    notebook
-   Installation <https://jupyter.readthedocs.org/en/latest/install.html>
-   Running the Notebook <https://jupyter.readthedocs.org/en/latest/running.html>
-   Migrating from IPython <https://jupyter.readthedocs.org/en/latest/migrating.html>
+   Installation <https://jupyter.readthedocs.io/en/latest/install.html>
+   Running the Notebook <https://jupyter.readthedocs.io/en/latest/running.html>
+   Migrating from IPython <https://jupyter.readthedocs.io/en/latest/migrating.html>
    ui_components
    comms
 

docs/source/links.txt

@@ -27,7 +27,7 @@
 .. Other python projects
 .. _matplotlib: http://matplotlib.org
 .. _nbviewer: http://nbviewer.jupyter.org
-.. _nbconvert: http://nbconvert.readthedocs.org/en/latest/
+.. _nbconvert: https://nbconvert.readthedocs.io/en/latest/
 
 .. Other tools and projects
 .. _Markdown: http://daringfireball.net/projects/markdown/syntax

setup.py

@@ -72,7 +72,7 @@ share documents that contain live code, equations, visualizations, and
 explanatory text. The Notebook has support for multiple programming
 languages, sharing, and interactive widgets.
 
-Read `the documentation <https://jupyter-notebook.readthedocs.org>`_
+Read `the documentation <https://jupyter-notebook.readthedocs.io>`_
 for more information.
     """,
     version         = version,