[Device Notifier] Auto-hide popup after device is unmounted
Summary:
When unmounting a removable device from dolphin, the device notifier
will popup saying the device can now be safely removed. But the popup
never auto-hides.
Test Plan:
Plug a USB pen drive
Unmount it from dolpin
Device notifier should popup and hide itself after 3 seconds
Reviewers: Plasma, VDG, broulik
Reviewed By: Plasma, broulik
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D16045