[qtmozembed] Merge vertical and horizontal decorator classes into one class
[qtmozembed] Add moving property to the scroll decorator

In future, we can control vertical and horizontal scroll
decorator independently based on move direction.
Merge pull request #61 from rainemak/movingToScrollDecorators

Moving to scroll decorators
[qtmozembed] Add moving property to the scroll decorator. Merge remote-tracking branch 'origin/master'