[qtmozembed] Disable flicking if touch point is not moved

If finger stays 200ms or more in one position, flicking is
not allowed.

In addition, this commit adds touch pressure for instantiated
mozilla::SingleTouchData objects. Also mozilla::MultiTouchInput
end has timestamp of the last touch update.
Merge pull request #33 from rainemak/addFlickModeTest

[qtmozembed] Disable flicking if touch point is not moved