I think it's a shame that the second most popular github repository does not have a code of conduct and I intend to fix this. We never needed a code of conduct, we don't want to need a code of conduct and that's why we need a code of conduct.

I submit this as a PR instead of commiting directly to master because I want to allow some debate on this issue. I will merge this PR in a week or so, if there is no good case against it.

Add “Complexité algorithmique” french free (by-nc-sa) book. 

Fix link to "A Guide to Python's Magic Methods"

Cleanup per formatting guidelines

Add front end and security podcast

Add JS: The Right Way to pt_BR

Cleanup of free-programming-books.md

Delete TODO, move to wiki

Added new link of javacript in interactive tutorials

Ascending order in interactive tutorials

Link for javascript-frameworks-resources-pt_BR adjusted

 Fix #1672

Problem sets already alphabetized. Updating TODO.

Add html/css/js book

Add ebook The Little Go Book