test support for webp images

webroot/check_system.php

@@ -15,7 +15,6 @@ echo "Extension imagick is $no loaded.<br>";
 
 $no = extension_loaded('gd') ? null : 'NOT';
 echo "Extension gd is $no loaded.<br>";
-
 if (!$no) {
     echo "<pre>", var_dump(gd_info()), "</pre>";
 }

webroot/img_config.php

@@ -41,7 +41,7 @@ return array(
      *  mode: 'production'
      */
      //'mode' => 'production',
-     //'mode' => 'development',
+     'mode' => 'development',
      //'mode' => 'strict',