Remembering that numpad were enabled

## Problem

Every time when my laptop locks I have to re-enable numpad.

## Proposal

I think that elementary os should remember that I had numpad enabled the last time I used lock screen. I would even say that elementary os should remember that numpad was enabled before shuting down PC, so num pad can be used, without the need to enable it, when os is booted, until it is manually disabled by the user.

## Prior Art

If I am not mistaken this is how it works on Windows.