Do not loose information about presence or not of saved request values (do not use "get").
Only recreate a iHotfix context if a language is available in request: otherwise, translating will fail loudly. If no context is defined, translation will still fail, but silently. Sigh.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20943 20353a03-c40f-0410-a6d1-a30d3c3de9de