Change radio to device icon, add more sizes
Summary: radio is now a symlink to audio-radio. Used by D21525 (Elisa). The previous version of this icon was a blue 16px only mimetype icon. As far as I know, it was only used by Banshee (abandoned), but it should still look fine for Banshee users.
Reviewers: VDG, ngraham
Reviewed By: VDG, ngraham
Differential Revision: https://phabricator.kde.org/D23249