D18637: Update some files to QQC2 and fix minor bug

[Nathaniel Graham]

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

REPOSITORY
  R223 Okular

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D18637

To: ognarb, #okular, ngraham
Cc: ngraham, nicolasfella, okular-devel, tfella, darcyshen, aacid
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