Merge pull request #993 from esparta/master

[en] Adding Python for Econometrics
index for #922
Added 1 Book and 2 Courses on Assembly
Fixed new line mistake
Added a Computer Vision - Python Book
Add free release of Bunnie Huangs Hacking the Xbox
Merge pull request #995 from andymc73/patch-1

Add free release of Bunnie Huangs Hacking the Xbox
URL fix
Merge pull request #994 from omarayad1/master

Added a few Books and some courses
Remove (HTML) mentions, remove a non-free book
[en] Adding Python book