Don't notify user of completed download when opening folder

[mskelton]

When the Open Folder When Done setting is enabled, it is probably not necessary to send the push notification since the file explorer/finder will already be opened resulting in two "notification" type things.

[timche]

Good catch, will implement that. Thanks!

[mskelton]

If you don't mind I'd like to take this on as a way of getting back into the project!

[timche]

Sure thing. Feel free 😄

[mskelton]

Fixed via #260