D22143: Add proper logging using ECMQtDeclareLoggingCategory

[Ivan Čukić]

ivan added a reviewer: kossebau.

REPOSITORY
  R159 KActivities Statistics

REVISION DETAIL
  https://phabricator.kde.org/D22143

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