D15645: [WIP] Add scheme selection menu with a "System" entry.

[Amish Naidu]

amhndu added a reviewer: Frameworks.

REPOSITORY
  R265 KConfigWidgets

REVISION DETAIL
  https://phabricator.kde.org/D15645

To: amhndu, #frameworks
Cc: kde-frameworks-devel, michaelh, ngraham, bruns