Changing notification time through dasboard

[Tayyaba]

Hi nodebb team @administrators @baris @julian, I have a suggestion wouldn't it be great if you guys give the option to change the notification time through dashboard. As I can see the notification option in settings and you can change the welcome message. But, on our platform we have to increase the 'timeout' time of the notification popup which appears on the screen, in 'public/src/modules/notifications.js', whenever we update the nodebb version to the latest one.

[baris]

@tayyaba https://github.com/NodeBB/NodeBB/issues/6456

[Tayyaba]

Thank you so much @baris