Update index.php

We have to use the function "stripcslashes" otherwise I won't work correctly 
tariqbuilds#427

Author: peshmerge

app/server/index.php

@@ -5,4 +5,4 @@
 	$shell_file = dirname(__FILE__) . '/linux_json_api.sh';
 	$module = escapeshellcmd($_GET['module']);
 
-	echo shell_exec( $shell_file . " " . $module );
+	echo stripcslashes(shell_exec( $shell_file . " " . $module ));