[AndyB] Internal data check 1.6

Checks for missing internal data attachment resource.

This add-on is designed to be run occasionally by the admin to verify all attachments have resources in the file system.

Installation:

1. Download Andy-InternalDataCheck-1.0.zip and unzip it.
2. Copy the src/addons/Andy/InternalDataCheck directory to your server.
3. From the Admin Control Panel Install the add-on.

How to use:

1. Only those with Administrator privileges can run this add-on.
2. Add 'internaldatacheck' to your forum URL.