D8319: Split the UI initialization and fix the about box

[Laurent Montel]

mlaurent accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R434 Kopete

BRANCH
  kf5-fix-aboutbox

REVISION DETAIL
  https://phabricator.kde.org/D8319

To: ltoscano, pali, mlaurent
Cc: #kopete