D17907: [frameworks] Do not use light font styles for headings (3/3)

[Root]

rooty added dependencies: D17906: [kirigami] Don't use light font styles for 
headings (2/3), D17905: [frameworks] Don't use light font styles for headings 
(1/3).

REPOSITORY
  R236 KWidgetsAddons

REVISION DETAIL
  https://phabricator.kde.org/D17907

To: rooty, ngraham, cfeck, kde-frameworks-devel
Cc: michaelh, ngraham, bruns