add empty feature

Author: zmh-program

app/utils.php

@@ -36,7 +36,9 @@ function get($param, $default = null)
  */
 function extracted($languages, $dark)
 {
-    $languages = $languages ? $languages : array();
+    $languages = $languages ? $languages : array(
+        array("name" => "none", "percent" => 100, "color" => "#ebedf0", "text" => "empty"),
+    );
     $bar = ceil(count($languages) / 2);
     $height = 215 + ($bar > 4 ? ($bar - 4) * 20 : 0);