D21067: Statusbar progress widget: update up/down icon when dialog goes away

[David Faure]

dfaure created this revision.
dfaure added a reviewer: mlaurent.
dfaure requested review of this revision.

REVISION SUMMARY
  The two need to always be in sync. The button was still showing "down"
  when the dialog went away with a timer.
  
  Since slotToggleVisibility() ends up calling StatusbarProgressWidget::slotProgressDialogVisible
  slotProgressButtonClicked() doesn't need to updateProgressButton() directly.

TEST PLAN
  Looking at the button at the end of a sync

BRANCH
  statusbarprogresswidget_cleanup

REVISION DETAIL
  https://phabricator.kde.org/D21067

AFFECTED FILES
  src/libkdepim/progresswidget/statusbarprogresswidget.cpp
  src/libkdepim/progresswidget/statusbarprogresswidget.h

To: dfaure, mlaurent
Cc: kde-pim
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