Add class variable tooltip_position to qPrefDisplay
Add class variable lastDir to qPrefDisplay
qPrefDisplay is updated to use new qPrefPrivate functions
Adjust test cases incl. qml tests
qPrefAnimations only has 1 variable, that really is a display variable
Merge the variable into qPrefDisplay, to simplify setup (and avoid loading
extra page in qml).
correct theme to save in correct place, and make it a static
class variable
Signed-off-by: Jan Iversen <jani@apache.org>
