Summary: This patch makes the user avatar that is selected (in focus) larger than the other unselected/deselected avatars surrounding it (provided there is more than one user).

Test Plan: {F6651290}

Reviewers: #vdg, ngraham

Reviewed By: #vdg, ngraham

Subscribers: davidedmundson, abetts, filipf, plasma-devel

Tags: #plasma

Maniphest Tasks: T10325

Differential Revision: https://phabricator.kde.org/D19372