Added 9 new books and 4 new translations of an existing one. (#4638)

* Added 3 Ruby books to en.

* Added 2 Java books to en.

* Added 2 Javascript books to en.

* Added 1 ECMAscript book to en.

* Added 1 PHP book to en.

* Added a bunch of translations.

Added translations of The Hitchhiker’s Guide to Python! in French, Korean, Brazilian Portuguese and Chinese. Also rectified Django entries in chinese.

* Changes in ordering.

As directed by travis-ci

* Minor odering changes

as directed by travis-ci

* Another ordering change.

* And another one.

free-programming-books.md

@@ -1561,6 +1561,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [3D Programming in Java](http://www.mat.uniroma2.it/~picard/SMC/didattica/materiali_did/Java/Java_3D/Java_3D_Programming.pdf) - Daniel Selman (PDF)
 * [Apache Jakarta Commons: Reusable Java Components](http://ptgmedia.pearsoncmg.com/images/0131478303/downloads/Iverson_book.pdf) - Will Iverson (PDF)
 * [Artificial Intelligence - Foundations of Computational Agents, Second Edition](https://artint.info/2e/html/ArtInt2e.html) - David L. Poole and Alan K. Mackworth
+* [Building Back-End Web Apps with Java, JPA and JSF](https://web-engineering.info/tech/JavaJpaJsf/book/) - Mircea Diaconescu, Gerd Wagner (HTML,PDF)
 * [Category wise tutorials - J2EE](https://www.mkyong.com/all-tutorials-on-mkyong-com/) - Yong Mook Kim
 * [Core Servlets and JavaServer Pages, 2nd Ed. (2003)](http://pdf.coreservlets.com) - Marty Hall and Larry Brown
 * [Data Structures in Java for the Principled Programmer (2007)](https://web.archive.org/web/20190302130416/http://dept.cs.williams.edu/~bailey/JavaStructures/Book_files/JavaStructures.pdf) - Duane A. Bailey (PDF)
@@ -1592,6 +1593,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Think Java: How to Think Like a Computer Scientist](http://greenteapress.com/thinkapjava/) - Allen B. Downey and Chris Mayfield
 * [Welcome to Java for Python Programmers](https://runestone.academy/runestone/books/published/java4python/index.html) - Brad Miller
 * [Welcome to the Java Workshop (2006)](http://javaworkshop.sourceforge.net) - Trevor Miller
+* [What’s New in Java 8](https://leanpub.com/whatsnewinjava8/read) - Adam L. Davis
 
 
 #### Codename One
@@ -1638,6 +1640,7 @@ Kerridge (PDF) (email address *requested*, not required)
 
 * [Basic JavaScript for the impatient programmer](http://www.2ality.com/2013/06/basic-javascript.html) - Dr. Axel Rauschmayer
 * [Book of Modern Frontend Tooling](https://github.com/tooling/book-of-modern-frontend-tooling)
+* [Building Front-End Web Apps with Plain JavaScript](https://web-engineering.info/JsFrontendApp-Book) - Gerd Wagner (HTML,PDF)
 * [Clean Code JavaScript](https://github.com/ryanmcdermott/clean-code-javascript)
 * [Crockford's JavaScript](http://www.crockford.com/javascript/) - Douglas Crockford
 * [Deep JavaScript: Theory and techniques](https://exploringjs.com/deep-js) - Dr. Axel Rauschmayer
@@ -1673,9 +1676,11 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Neural Networks with JavaScript Succinctly](https://www.syncfusion.com/ebooks/neural-networks-with-javascript-succinctly) - James McCaffrey
 * [Oh My JS](https://web.archive.org/web/20150317231950/https://leanpub.com/ohmyjs/read) - Azat Mardanov
 * [Patterns For Large-Scale JavaScript Application Architecture](http://addyosmani.com/largescalejavascript/) - Addy Osmani
+* [Practical Modern JavaScript](https://github.com/mjavascript/practical-modern-javascript) - Nicolas Bevacqua
 * [Professor Frisby’s Mostly Adequate Guide to Functional Programming](https://mostly-adequate.gitbooks.io/mostly-adequate-guide/content/) - Brian Lonsdorf
 * [Programming JavaScript Applications](https://www.oreilly.com/library/view/programming-javascript-applications/9781491950289/)
 * [Speaking JavaScript](http://speakingjs.com/es5/) - Dr. Axel Rauschmayer
+* [Standard ECMA-262 ECMAScript 2016 Language Specification](https://www.ecma-international.org/publications/standards/Ecma-262.htm) - Ecma International (HTML,PDF)
 * [The JavaScript Tutorial](http://javascript.info)
 * [The JavaScript Way](https://github.com/bpesquet/thejsway) - Baptiste Pesquet
 * [The Problem with Native JavaScript APIs](https://www.oreilly.com/programming/free/native-javascript-apis.csp) (email address *requested*)
@@ -2152,6 +2157,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [PHP Internals Book](http://www.phpinternalsbook.com)
 * [PHP Pandas](http://daylerees.com/php-pandas/) - Dayle Rees
 * [PHP Programming](https://en.wikibooks.org/wiki/PHP_Programming) - Wikibooks
+* [PHP Reference: Beginner to Intermediate PHP5](https://phpreferencebook.com/pdf/download/) - Mario Lurig (PDF)
 * [PHP Security Guide](http://phpsec.org/projects/guide/)
 * [PHP: The Right Way](http://www.phptherightway.com)
 * [PHPUnit Manual](https://phpunit.de/manual/current/en/phpunit-book.pdf) - Sebastian Bergmann (PDF)
@@ -2490,6 +2496,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Object Oriented Programming with Ruby](https://launchschool.com/books/oo_ruby) - Launch School
 * [Practicing Ruby](https://github.com/elm-city-craftworks/practicing-ruby-manuscripts)
 * [Programming Ruby](http://ruby-doc.com/docs/ProgrammingRuby/)
+* [Ruby Best Practices](https://github.com/practicingruby/rbp-book/tree/gh-pages/pdfs) - Gregory Brown (PDF)
 * [Ruby Essentials](http://www.techotopia.com/index.php/Ruby_Essentials)
 * [Ruby Hacking Guide](http://ruby-hacking-guide.github.io)
 * [Ruby in Twenty Minutes](https://www.ruby-lang.org/en/documentation/quickstart/)
@@ -2500,7 +2507,9 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Ruby Web Dev: The Other Way](https://leanpub.com/rwdtow/read) - Yevhen Kuzminov
 * [Rubyfu](https://rubyfu.net)
 * [The Bastards Book of Ruby](http://ruby.bastardsbook.com)
+* [The Book Of Ruby](http://www.sapphiresteel.com/ruby-programming/The-Book-Of-Ruby.html) - Huw Collingbourne
 * [The Definitive Ruby Tutorial For Complete Beginners](https://www.rubyguides.com/ruby-tutorial/) - Jesus Castello
+* [The Little Book Of Ruby](http://www.sapphiresteel.com/ruby-programming/The-Little-Book-Of-Ruby.html) - Huw Collingbourne
 * [The Ruby Reference](https://rubyreferences.github.io/rubyref/) - Victor Shepelev
 * [The Unofficial Ruby Usage Guide (at Google)](http://www.caliban.org/ruby/rubyguide.shtml) - Ian Macdonald
 * [Using Blocks in Ruby](https://www.oreilly.com/programming/free/files/using-blocks-in-ruby.pdf) - Jay McGavren (PDF)