D15323: Hide printer applet if no printer is configured

[Kai Uwe Broulik]

broulik created this revision.
broulik added reviewers: Plasma, VDG.
Herald added a subscriber: kde-utils-devel.
broulik requested review of this revision.

REVISION SUMMARY
  Having a printer is less common these days and having a tray icon sitting there in the popup all the time clutters the list.

TEST PLAN
  - Verified that plasmoid is hidden when no printer is set up
  - Verified that plasmoid is passive (hidden in popup) when printers are set up but no print job is active
  - Verified that plasmoid is active (shows in panel) when print job is active
  - Verified that error case still works (since I moved the `jobModelError` to root)
  - Verified that serach box (only shows if there are many printers) still works

REPOSITORY
  R363 Print Manager

REVISION DETAIL
  https://phabricator.kde.org/D15323

AFFECTED FILES
  plasmoid/package/contents/ui/PopupDialog.qml
  plasmoid/package/contents/ui/printmanager.qml

To: broulik, #plasma, #vdg
Cc: kde-utils-devel
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