[pyramid/security] use cryptographically secure random generator
Based on django source code in case SystemRandom is not available.
According to python documentation:
https://docs.python.org/2/library/random.html
> Warning
> The pseudo-random generators of this module should not be used for security
> purposes. Use os.urandom() or SystemRandom if you require a cryptographically
> secure pseudo-random number generator.
.. -*- coding: utf-8 -*-
CSS Stylesheet
---------------
Conventions
~~~~~~~~~~~
.. XXX external_resources variable
.. naming convention
.. request.add_css
Extending / overriding existing styles
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We cannot modify the order in which the application is reading the CSS. In
the case we want to create new CSS style, the best is to define it a in a new
CSS located under ``myapp/data/`` and use those new styles while writing
customized views and templates.
If you want to modify an existing CSS styling property, you will have to use
``!important`` declaration to override the existing property. The application
apply a higher priority on the default CSS and you can not change that.
Customized CSS will not be read first.
CubicWeb stylesheets
~~~~~~~~~~~~~~~~~~~~
.. XXX explain diffenrent files and main classes