Sort locales according to their names (#18211)

* Sort locales according to their names

* Fix documentation and sort case insensitive

Author: delvh

modules/translation/translation.go

@@ -5,6 +5,9 @@
 package translation
 
 import (
+	"sort"
+	"strings"
+
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/options"
 	"code.gitea.io/gitea/modules/setting"
@@ -31,7 +34,7 @@ var (
 	supportedTags []language.Tag
 )
 
-// AllLangs returns all supported langauages
+// AllLangs returns all supported languages sorted by name
 func AllLangs() []LangType {
 	return allLangs
 }
@@ -72,6 +75,11 @@ func InitLocales() {
 	for i, v := range langs {
 		allLangs = append(allLangs, LangType{v, names[i]})
 	}
+
+	// Sort languages case insensitive according to their name - needed for the user settings
+	sort.Slice(allLangs, func(i, j int) bool {
+		return strings.ToLower(allLangs[i].Name) < strings.ToLower(allLangs[j].Name)
+	})
 }
 
 // Match matches accept languages