D10175: use kcrash so we get drkonqi to pop up on crashes

[Bhushan Shah]

bshah accepted this revision.
This revision is now accepted and ready to land.
REPOSITORY
  R124 System Settings

BRANCH
  Plasma/5.12

REVISION DETAIL
  https://phabricator.kde.org/D10175

To: sitter, mart, bshah
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart