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

Authored by loh.tar on Apr 11 2019, 12:27 PM.

Description

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

The old special created pixmap is once working fine but not so easy to maintain.
The look is/was however special too.

Differential Revision: https://phabricator.kde.org/D20434