Correct lengths for username and names

cmd/frontend/users.go

@@ -11,8 +11,8 @@ import (
 )
 
 func checkUserStrings(user *b.User) (string, int, bool) {
-	userLen := 255
-	nameLen := 56 // max value when aes encrypting up to 255 bytes
+	userLen := 63 // max value for utf-8 at 255 bytes
+	nameLen := 56 // max value when aes encrypting utf-8 at up to 255 bytes
 
 	if len(user.UserName) > userLen {
 		return "Benutzername", userLen, false