KCM/Component Refactor UI to a single list of combobox
Summary:
Refactor UI to a single list of Combobox:
- Simplify code
Test Plan:
Before:
After:
In systemsettings :
Reviewers: Plasma, VDG, ngraham, ervin
Reviewed By: VDG, ngraham, ervin
Subscribers: filipf, broulik, plasma-devel
Tags: Plasma
Maniphest Tasks: T12551
Differential Revision: https://phabricator.kde.org/D26797