allowed locales and strict_match

[dbu]

i wonder if strict_match should not be true by default. when i configure the allowed locales to be [en, de] but my browser has de_CH as first locale, i end up with "Not allowed to switch to locale de_CH".

if i enable strict_match, things work as expected, even if my browser does not announce just "de" as option.

if i enable strict_mode, i end up with english if i only ask for de_CH but not de, which is not a good behaviour imho.