D20977: [KeySequenceItem] Make the clear button have the same height as shortcut button

[David Edmundson]

davidedmundson accepted this revision.

REPOSITORY
  R296 KDeclarative

BRANCH
  same-button-height (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D20977

To: filipf, #vdg, ngraham, #frameworks, broulik, davidedmundson
Cc: broulik, kde-frameworks-devel, michaelh, ngraham, bruns