(Animation) Ensure animator has been activated before performing the disconnect action

(Animation) Ensure animator has been activated before performing the disconnect action

[problem]  Animations can be created, therefore creating animators, but not played. If the
           property owner was disconnected before the animation was played, the disconnect
           action was still applied.
[solution] Set a state on the animator to state whether it is active or not and only apply
           the disconnect action (if required) if it was active.

Change-Id: Idd615938182a22f0fd91425bc2d2e83aeea18480