D19132: Update libs/widgets to c++11

[Dag Andersen]

danders added a comment.


  > Thanks for the review, I will work next on libs/{pigment,version,widgetutils}.
  
  Hmm, maybe wait with pigment, according to rempt, only krita actually used it.
  I haven't looked into it, but if that is the case probably we should dump it.

REPOSITORY
  R8 Calligra

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D19132

To: ognarb, #calligra:_3.0, leinir, danders
Cc: danders, Calligra-Devel-list, dcaliste, cochise, vandenoever
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