Summary:
Lots of red, does the same thing in a simplified way avoiding creating a
real window and having to hack round it.
Test Plan: Click add and remove, remove button disables appropriately
Reviewers: #kwin, zzag
Reviewed By: #kwin, zzag
Subscribers: meven, zzag, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D26381
esp. the list-remove icon looks like "delete" and
can cause worries about what happens to the windows
as a bonus, the buttons now follow the DPI. are a
little smaller (presently might fit touch devices? but
is way to huge on "normal" desktops with ordinary DPI)
and the buttons have nice visible animations on pressing
BUG: 354131
FIXED-IN: 5.5
