[TIMOB-11941] relayout before showing view

[farfromrefug]

jira ticket

First setHidden method was incorrectly checking if the view was currently hidden. In fact if you create a view with visible:false, then when showing the view, setHidden would not call willShow.

Now in willShow the relayout was enqueued. It should be done immediately to make sure the view has the correct layout right away.
I called refreshView but may be that s not the right call to make. It works but i was not sure of the "level" of refreshView.

[ingo]

Thank you for the contribution. We currently believe that this approach may actually decrease performance so we are concerned with the particular implementation here, though we are planning on addressing this for 3.3.0. Any thoughts?

[farfromrefug]

Well i actually completely rewrote the layout system because of refreshView. That method is a lot too expensive.
I went for a recursively up check of needed layout.
The idea is that in a view, if one child requires layout, it does mean you should relayout the whole parent and all its children.

So i guess this PR is simply dead ;)