Merge pull request #297 from kuyan/master

Formatting, code highlighting fixes.
Use code tags where needed.
Use code tags where needed.
Wrap lines to 78 char.
Let Sphinx link to Python documentation.

Instead of directly linking to the relevant passages.
Don't use direct links if it can be helped.
New installs of Python through Homebrew come with pip :)
Merge pull request #301 from kuyan/patch-1

More formatting fixes, link fixes
Merge pull request #302 from bmcorser/patch-1

New installs of Python through Homebrew come with pip :)
Update "Late Binding Closures" section of gotchas.rst

The late binding closure example seems like a good use case for the
functools.partial function.
Update style.rst
Minor wording correction and changed some code-block tags to be python
Merge pull request #305 from Duta/patch-2

Minor wording correction and changed some code-block tags to be python
Merge pull request #304 from Duta/patch-1

Update style.rst
Merge pull request #303 from claudejrogers/patch-1

Update "Late Binding Closures" section of gotchas.rst
Update learning.rst

Python books for Engineers and Scientists have been added.
Add some package tools for statistical computing

Add IPython as tool for reproducible science
Add Pandas and Rpy2 as relevant tool for those interested in statistics
with Python
Add scientific/neuroscience tools

PsychoPy a library for cognitive science
Update news.rst
Update gui.rst

The information about PyjamasDesktop (pyjs Desktop) has been added.