Background gradient is now always decided based on window flag.
CCBUG: 273423
Added option in oxygenrc to disable window background:
[Common]
UseBackgroundGradient=true
Option is hidden (no UI element) because of string freeze
Also removed decoration blend style option.
Background gradient is now always decided based on window flag.
CCBUG: 273423
Many headers included KLocale to use i18n and co. But those methods are
defined in KLocalizedString and not in KLocale.
With KF5 klocale.h does no longer include KLocalizedString causing lots
of compile errors.
Fixed krazy warning about invalid ifdef guard in include
Fixed Krazy warning about signal/slot normalization.
fixed Krazy spelling warning in comments.