cubicweb #1251764 set ui language during session [open]

currently, the language of the ui is set using content negociation or using the preferences. it would be useful to be able to set it for the current session using a cookie. it would then be easy to add language buttons somewhere that allow to switch language.

priorities would be "session language cookie" >> preferences >> content negotiation.

prioritynormal
typeenhancement
done in<not specified>
closed by<not specified>