Read SingleClickActivation from KDE settings file

Change-Id: Ia2ccea89cefb85a7641628d32f925b32ecd6bdc6
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
QKdeTheme: generate sensible disabled colors for the system palette

Task-number: QTBUG-31670
Change-Id: Icbd2f35d9c2f5c1ef05c9dfeae4922be01ff2751
Reviewed-by: Dominik Holland <dominik.holland@pelagicore.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>