Bug fix on the PickerView to inform attached observers that the underlying data has been changed

Signed-off-by: Michalis Vitos <info@michalisvitos.gr>
Removed the asyntask from the animation/Animator.java

Signed-off-by: Michalis Vitos <info@michalisvitos.gr>
Used the Android Handler to execute the task

Signed-off-by: Michalis Vitos <info@michalisvitos.gr>
Merge branch 'ClickAnimation'