D25036: Don't double format spreadsheet currency values with custom format strings.

[Andrew den Exter]

denexter added a reviewer: pvuorela.

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D25036

To: denexter, pvuorela
Cc: Calligra-Devel-list, dcaliste, cochise, vandenoever