#2494

* Uniform treatment of Leanpub books

free Leanpub books come in two flavors
- free to read online without an account or email address
- free to read after a "purchase" with a minimum price of "Free!" A
valid email is requested to create an account, but you can read   or
download even if the email is bogus.

After some consideration, I'm proposing that the free-to-read books
should be without any annotation, and the free-after-"purchase" books
be denoted as *(Leanpub Account or valid email requested)* . This PR
implements that for the english lists.

Comments requested!

* add required space

* implement #2357

* misc cleanup

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* Update javascript-frameworks-resources.md

* add 🚧 emoji per CONTRIBUTING

Also, get a start on uniform notation of leanpub books

* Replace homepage with GitHub repository link

problem-sets-competitive-programming.md: Replace homepage
link of problembook with github repository link which contains
downloadable pdf links.

* Remove broken links

Remove broken links and update available links from
web.archive.org.

* Update broken link with updated link.

Update the description for the updated link.

* Update broken links with links from web.archive.org

Remove dead links.

* Restore path to original link instead of web.archive.org

The link seems to be working fine. It was not loading
on my network, probably due to regional restrictions.

* Remove github link which is no longer maintained.

Github link consisted of list of Big Data resources.
The repository has been deleted by the user.
Hence deleting the entry.

* Add "Start Using React to Build Web Applications"

* alphabetize

sort the books of Javascript Framework, move Node.js from JS Framework to free-programming-books and so on (#2355)

* delete Natural Language Processing in Lisp

* GNU Emacs Manual

* Sketchy LISP

* Haskell and Yesod

* Sketchy LISP: An Introduction to Functional Programming in Scheme

* Sketchy LISP: An Introduction to Functional Programming in Scheme

* Teach Yourself Scheme in Fixnum Day

* change 'The Python GTK+ 3 Tutorial' to Python

* remove Programming and Using Linux Sound - in depth

* Data Structures and Algorithms in Python

* Fundamentals of  Python Programming

* Fundamentals of  Python Programming

* Fundamentals of  Python Programming

* supporting Python 3 An in-depth guide

* Introduction to Python for Econometrics, Statistics and Data Analysis

* Python for Everybody Exploring Data Using Python 3

* The Hitchhiker’s Guide to Python

* Python 3 Module of the Week

* Scipy Lecture Notes

* The Standard Python Library

* Problem Solving with Algorithms and Data Structures using Python

* How To Tango With Django

* Quick Tutorial for Pyramid

* C Programming Boot Camp

*  1015:3-1015:78  warning  Missing PDF indication                                                 books-links        remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1807 and l.1806                          alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1839 and l.1838                          alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1844 and l.1843                          alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1853 and l.1852                          alphabetize-lists  remark-lint
  1792:3-1792:134  warning  Missing PDF indication                                                 books-links        remark-lint
  1893:1-1893:130  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint

*  1780:1-1859:90  warning  Alphabetical ordering: swap l.1809 and l.1808  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1838 and l.1837  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1844 and l.1843  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1854 and l.1853  alphabetize-lists  remark-lint
  1792:3-1792:140  warning  Misplaced author                               books-links        remark-lint

*  1780:1-1859:90  warning  Alphabetical ordering: swap l.1809 and l.1808  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1838 and l.1837  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1844 and l.1843  alphabetize-lists  remark-lint
   1780:1-1859:90  warning  Alphabetical ordering: swap l.1854 and l.1853  alphabetize-lists  remark-lint
  1792:3-1792:140  warning  Misplaced author                               books-links        remark-lint

* remove hackershelf.com

* remove hackershelf.com
remove Data Structures and Algorithms with Object-Oriented Design Patterns in Java
remove JAAS in Action

* modify the title of book Java Application Development on Linux

* Java Language and Virtual Machine Specifications

* remove The Java Tutorials

* 1270:1-1299:83  warning  Alphabetical ordering: swap l.1293 and l.1292  alphabetize-lists  remark-lint

* 1270:1-1299:83  warning  Alphabetical ordering: swap l.1283 and l.1282  alphabetize-lists  remark-lint

* remove 'JavaScript Spessore'

* remove 'Oh My JS'

* The Problem with Native JavaScript APIs

* fount the lost 2 books:Oh My JS and JavaScript Spessore in archive.org

* ignore some change of name

* update the url of 'AngularJS in 60 Minutes'

* The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

* swap Redux and React

* move Node.js from js-frameworks-resources to free-programming-books

* sort by aphabeta

*  1374:1-1380:52  warning  Alphabetical ordering: swap l.1379 and l.1378  alphabetize-lists  remark-lint

* Updated javascript-frameworks-resources.md

Added a new Angular.JS and Node.JS free eBooks

* Updated free-programming-books.md

Added the new eBook in alphabetical order

* Updated free-programming-books.md

Corrected the new eBook alphabetically

* Update broken links

* Add pdf indication

* add Aurelia free book

* add new line between head and last line

* Update broken links

* Small fix

* Update broken link

* Remove problematic links

* Fix according to comments

* Formatting

* added NodeJS Documentation as a javascript framework resource

* added Angularjs material designing resource to javascript framework resources

* rearranged position of angular material desigining

* added machine learning free course on coursera.org

and Getting Started with Redux free video course.