"Language status" niveau d'extinction system language status page "Language status" EGIDS system system EGIDS official recognition EGIDS Language status Language Status EGIDS system EGIDS system «Language status» «Language status» official recognition EGIDS EGIDS official recognition https://www.ethnologue.com/about/language-status official recognition Expanded Graded Intergenerational Disruption Scale (EGIDS) system languages official recognition Language status. system Ethnologue lle outorga á vitalidade da lingua