fix display of image orientation
Summary:
The name of the orientation property
for baloo/kfilemetadata was false, leading to
an always empty image orientation field.
Test Plan:
Look at an image in Dolphin details view
which has the exiv orientation tag set. Orientation
column is not empty.
Reviewers: Dolphin, ngraham
Reviewed By: Dolphin, ngraham
Subscribers: ngraham, kfm-devel
Tags: Dolphin
Differential Revision: https://phabricator.kde.org/D18008