Add "Security Check" Step to Installation process

Add "Security Check" Step to Installation process, after Theme selection.

1. Permissions Check:

• /index.php (Secure (in greed) or Vulnerable)
• /config.php (Secure (in greed) or Vulnerable)
• /admin/index.php (Secure (in greed) or Vulnerable)

Message for users (don't include this line):

[MESSAGE IN RED]
For security reasons it's highly recommended to set 755 permissions on above files to prevent hacking attempts.
[/MESSAGE IN RED]

2. Executing PHP in writable folders:

• Result of creating and executing PHP file(s) in /system (or /system/images) (Secure (in greed) or Vulnerable (in red))

Message for users if Failed (don't include this line):

[MESSAGE IN RED]
For security reasons it's highly recommended disable the access (execution) to PHP files within /system folder and it's subfolders.
[/MESSAGE IN RED]

You can do this by:

• changing your httpd.conf file to deny requests for all *.php files.
• renaming .htaccess-sample (located in /system) to .htaccess so it overrides default Apache settings.

Note that "AllowOverride LIMIT" option option should be enabled by your host.

Check whether PHP file(s) can be created/executed in /system and/or /system/images folders.

As was suggested let's use cURL for this tests.