D24852: Remove list style from headings

[Camilla Boemann]

boemann added a reviewer: boemann.

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D24852

To: akomakhin, pvuorela, #calligra:_3.0, boemann
Cc: boemann, Calligra-Devel-list, dcaliste, cochise, vandenoever