NbtkTooltip: add bounce on show and scale on hide
NbtkTooltip: add bounce on show and scale on hide

jonnylamb/mx,pwithnall/mx,clutter-project/mx,pwithnall/mx,pwithnall/mx,jonnylamb/mx,clutter-project/mx,clutter-project/mx,pwithnall/mx,jonnylamb/mx,jonnylamb/mx,clutter-project/mx