[web] Simplify a bit language handling
Drop `set_default_language` and `set_user_language` by considering that:
* before being bound to the user, request will have the site's default language
* cnx has the user's preferred language, hence get it back to the request when
it's bound to a connection
The first point requires some change to cubicweb's vreg faking so it doesn't
break.
That should be enough.
CSS Coding Standards
--------------------
(Draft, to be continued)
:Naming: camelCase
Indentation rules
~~~~~~~~~~~~~~~~~
- 2 espaces avant les propriétés
- pas d'espace avant les ":", un espace après
- 1 seul espace entre les différentes valeurs pour une même propriété
Documentation
~~~~~~~~~~~~~
Please keep rules semantically linked grouped together, with a comment about
what they are for.
Recommendation
~~~~~~~~~~~~~~
- Try to use existing classes rather than introduce new ones
- Keep things as simple as possible while in the framework
- Think about later customization by application
- Avoid introducing a new CSS file for a few lines of CSS, at least while the
framework doesn't include packing functionalities