Summary:
icon sizes and label placements tested correct in several scenarios
* control.icon.width/height is used as maximum size of the icon
* if the button is smaller icons always scale down
* icons stay ccentered regardless of button size when there is no text
Test Plan:
fixes icon sizes without workarounds like D27260
{F8108705}
Reviewers: #plasma, davidedmundson
Reviewed By: #plasma, davidedmundson
Subscribers: davidedmundson, kde-frameworks-devel
Tags: #frameworks
Differential Revision: https://phabricator.kde.org/D27460
