test-scroll-view: Add toggle switches for elasticity and overshoot
test-scroll-view: Add toggle switches for elasticity and overshoot

Add toggle switches to enable/disable elasticity and overshooting on the
MxKineticScrollView.

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