Add ability to set the notification duration and the persistence

[fetrarij]

Add ability to set the notification duration and the persistence.

We're using this components in our project and need some customization like this one: we can choose if the notification is persistent or not, if not, for how long it should be shown?

Usage:

$notification.info(title, content, duration, userData);

Duration is optional (milliseconds): It allows you to set how long the notification is shown. Put 0 or false if you want a persistent notification. If not given it take the value in the setting (5000).

[pdf]

Inserting duration before userData will break existing users' code.

[fetrarij]

Thank you, I put the duration before userData because we don't use the userData and facilitates the function call in our local project.
I'll create one.