Merge pull request #144 from Kanti/master

bugifx version 2.5.1

cache/installedVersion.json

@@ -1,4 +1,4 @@
 {
     "id": 782014,
-    "tag_name": "v2.5"
+    "tag_name": "v2.5.1"
 }

system/upgrade/index.php

@@ -1,4 +1,5 @@
 <?php
+$config_file = 'config/config.ini';
 
 require 'system/vendor/autoload.php';
 require 'system/htmly.php';

system/upgrade/run.php

@@ -24,6 +24,8 @@ function rrmdir($dir)
         }
         reset($objects);
         rmdir($dir);
+    } else if (is_file($dir)) {
+        unlink($dir);
     }
 }
 
@@ -35,7 +37,7 @@ if (isGraterThan("2.3")) {// 2.4, 2.5, ...
 }
 
 
-if(!config("dev")){
+if (!config("dev")) {
     file_put_contents("index.php", file_get_contents("system/upgrade/index.php"));
     rrmdir("system/upgrade/");
 }