several translation fixes, update translations

classes/dlg.php

classes/pref/filters.php

include/localized_schema.php

locale/ca_CA/LC_MESSAGES/messages.mo

locale/ca_CA/LC_MESSAGES/messages.po

locale/de_DE/LC_MESSAGES/messages.mo

locale/de_DE/LC_MESSAGES/messages.po

locale/es_ES/LC_MESSAGES/messages.mo

locale/es_ES/LC_MESSAGES/messages.po

locale/fr_FR/LC_MESSAGES/messages.mo

locale/fr_FR/LC_MESSAGES/messages.po

locale/hu_HU/LC_MESSAGES/messages.mo

locale/hu_HU/LC_MESSAGES/messages.po

locale/it_IT/LC_MESSAGES/messages.mo

locale/it_IT/LC_MESSAGES/messages.po

locale/ja_JP/LC_MESSAGES/messages.mo

locale/ja_JP/LC_MESSAGES/messages.po

locale/nb_NO/LC_MESSAGES/messages.mo

locale/nb_NO/LC_MESSAGES/messages.po

locale/pl_PL/LC_MESSAGES/messages.mo