Django is a high-level Python Web framework, therefore, it should be
included as a subsection of `Python`.

Ref: https://www.djangoproject.com/

Added 'Practical File System Design: The Be File System' and a Smalltalk list.

Conflicts:
	free-programming-books.md

Put things from misc into appropriate postitions.
Put a few links into their correct sections, in my opinion.

New category: Theoretical OCmputer Science
(Put stuff about automata,formal languages,computability..etc into it)

Deleted duplicated backbone.js books.

Update free-programming-books.md

Added book to Mathematics section

Added some more books. I've found both of these extremely useful :)

Added book to Datamining section

Introduction to Statistical Thought by Michael Lavine

The Elements of Statistical Learning: Data Mining, Inference, and Prediction.  By Trevor Hastie, Robert Tibshirani, and Jerome Friedman

Added book by David MacKay to Machine Learning section

Information Theory, Inference, and Learning Algorithms

Added first line (python) in italian list

Added The wikibooks 'x86 Assembly guide'

Added "Network Security Tools" book to the Network section

Added a Drupal Framework section under php literature with a couple of f...

Added Machine Learning Books

Conflicts:
	free-programming-books.md

Added Programming with gtkmm and GUI category

Added subcategory for Backbone.js and a link for 'Developing Backbone.js...

Sage for Power Users by William Stein