Properly change buttons hit area to enforce Fitts law when windows are quick-tiled and or vertically/horizontally maximiezed. At the same time, do not draw the window round corners.
Summary: CCBUG:383434
Reviewers: ngraham, graesslin
Reviewed By: ngraham
Subscribers: Zren, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D7355