D13583: KFormat: Allow usage of quantities beyond bytes and seconds

[Stefan Brüns]

bruns added a task: T8500: Add HIG rules about use of units/symbols in (config) 
UI.

REPOSITORY
  R244 KCoreAddons

REVISION DETAIL
  https://phabricator.kde.org/D13583

To: bruns, #frameworks
Cc: kde-frameworks-devel, astippich, michaelh, ngraham, bruns