Do not allow deactivate

[Dennis Tsang]

For whatever reason, if you do not want your plugin deactivated, add this to the deactivate function:

global $codename;
$active_plugins[$codename] = $codename;

I have found this useful when writing private plugins for my own forums, which I don't want other administrators to deactivate. I wouldn't expect many plugins to have this anyway

[Christian]

thanks for the code dennis