View hierarchy order

[SamuPS]

There are some cases where view hierarchy order is required, resulting in undesired behaviour.
Fix this so child views order is respected when required.

Example:

Parent with 2 children.
Transitionhandler slides for Child2, no animation for Child1.
Child1 as default.
Push Child2.
Child2 slides in.
Pop Child2.
Child1 is placed on top of child2(So exist transition is not visible, or it visible under Chidl1 if Child1 background is transparent.)