D23399: Add setter to Type, Activity, Agent and UrlFilter query fields

[Méven Car]

meven marked 2 inline comments as done.

REPOSITORY
  R159 KActivities Statistics

REVISION DETAIL
  https://phabricator.kde.org/D23399

To: meven, ivan
Cc: kossebau, kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns