Add Sardinian language

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/html/i18n.html

@@ -125,6 +125,7 @@ for l in Language.objects.exclude(name__contains='generated').values_list('name'
 {% trans "Romanian" %}
 {% trans "Romansh" %}
 {% trans "Russian" %}
+{% trans "Sardinian" %}
 {% trans "Scots" %}
 {% trans "Serbian" %}
 {% trans "Serbian (cyrillic)" %}

weblate/lang/data.py

@@ -141,7 +141,13 @@ EXTRALANGS = (
         'Colognian',
         3,
         'n==0 ? 0 : n==1 ? 1 : 2',
-    )
+    ),
+    (
+        'sc',
+        'Sardinian',
+        2,
+        'n != 1',
+    ),
 )
 
 # List of defaul languages - the ones, where using