D19512: KateStatusBar: Show lock icon on modified label when in read-only mode

[loh tar]

loh.tar created this revision.
loh.tar added a reviewer: KTextEditor.
Herald added projects: Kate, Frameworks.
Herald added subscribers: kde-frameworks-devel, kwrite-devel.
loh.tar requested review of this revision.

REVISION SUMMARY
  This may not needed because the information is already shown as part of the
  inputMode label, on the other hand is that information there somehow misplaced.

TEST PLAN
  You see the little lock bottom left?
  F6656347: 1551707627.png <https://phabricator.kde.org/F6656347>

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D19512

AFFECTED FILES
  src/view/katestatusbar.cpp

To: loh.tar, #ktexteditor
Cc: kwrite-devel, kde-frameworks-devel, #ktexteditor, domson, michaelh, ngraham, bruns, demsking, cullmann, sars, dhaumann
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