Captive portal notification improvements
Summary:
Do not duplicate captive portal notifications and close them when we are no longer
behind captive portal.
BUG: 411846
BUG: 411847
Reviewers: ngraham, broulik, Plasma
Reviewed By: ngraham
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D26042