Add-ons [CSCN] Debug Defender 1.0.0

When using Development Mode on an active site, the debug information appears at the bottom of every page, compromising certain confidential intelligence. This plugin deals with this by:

1. Automatically replaces "_debug=1" to "_debug=0" to block the access to the debug report page. There's an option in the "Board active" setup in the AdminCP.
2. Hide debug footer to anyone by default, but there's an option to make it visible to admin users.
3. Reduced contents displayed in the debug footer, controllable through "Template Modifications".

This is how NikitOS's method applied in the code listener:
$ EOF.