[Merge] lp:~gerboland/qtubuntu/mouse-enter-leave-events into lp:qtubuntu

[Lukáš Tinkl]

Review: Disapprove

This is already superseded by the wheelEvent branch, can scrath this

See https://code.launchpad.net/~lukas-kde/qtubuntu/wheelEvent/+merge/273149
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https://code.launchpad.net/~gerboland/qtubuntu/mouse-enter-leave-events/+merge/249581
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