D20434: KateIconBorder: Use UTF-8 char instead of special pixmap as dyn wrap indicator

[loh tar]

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

REVISION SUMMARY
  The old special created pixmap is once working fine but not so easy to maintain. The look however special too.
  
  The new code looks much more simpler but has the potential to fail when there is no such char in the desired font available.

TEST PLAN
  New look, the old you will know
  F6764371: 1554904220.png <https://phabricator.kde.org/F6764371>

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D20434

AFFECTED FILES
  src/view/kateviewhelpers.cpp
  src/view/kateviewhelpers.h

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