switch our installed hicolor icons to the ones from breeze
Summary:
the old crystal icons are getting a bit long in the tooth and are
inconsistent on our windows build which use the breeze icons by default
Reviewers: sandsmark, ltoscano
Reviewed By: ltoscano
Subscribers: ltoscano, kde-utils-devel
Differential Revision: https://phabricator.kde.org/D8935