[web-request] handle default language earlier
We now read language negotiation header at initialisation time (previously done
during ``set_session``). This simplify the set_session code for later reworking.
There is no change in behavior, the user selected language continue to overwrite
the one picked from the header/default when applicable.
related to #2503918
# -*- coding: utf-8 -*-
###############################################################################
#
# Put here information about external resources / styles used by your cube,
# or to overides existing UI properties.
#
# Existing properties are available through the `sheet` dictionary available
# in the global namespace. You also have access to a `data` function which
# will return proper url for resources in the 'data' directory.
#
# /!\ this file should not be imported /!\
###############################################################################
# CSS stylesheets to include in HTML headers
# uncomment the line below to use template specific stylesheet
# STYLESHEETS = sheet['STYLESHEETS'] + [data('cubes.%(cubename)s.css')]