[forms] Fix edition of TZDatetime attributes
Parse the submitted web form values into a timezone-aware datetime
(by default, UTC) when such an attribute is edited. This is done using
an automatically-selected (by `web.formfield.guess_field`) field named
`TZDatetimeField`.
Closes #12666598.
.. -*- coding: utf-8 -*-
CSS Stylesheet
---------------
Conventions
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.. 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