No indicator in front of NAT when it's disabled

[weust1979]

When a NAT is disabled, there is no indicator that it is disabled, apart from looking it up in the NAT by editing it.

A Rule at least has a grey icon instead of a coloured one indicating Pass/Block/Reject.

Perhaps a red coloured circle in front of a disables NAT would help indicate it being disabled?

[AdSchellevis]

It should have been greyed out. commit b668fde makes it more visible.