D23951: Improve desktop layout and panel editing UX

[Björn Feber]

GB_2 removed a dependency: D23950: Only show "Add Widgets..." panel context menu option in panel edit mode.

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D23951

To: GB_2, #plasma, #vdg
Cc: ngraham, #vdg, kde-frameworks-devel, #plasma, LeGast00n, GB_2, michaelh, bruns
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