Adapter screen timing fix

[skellock]

An adapter can start requesting data from it's list screen prior to blue potion setting the proper PMScreen on find.screen.

This tells the adapter explicitly who the parent screen is, so we're not firing off update methods against the "last" screen.

Another option might be to start the adapter in a paused state so the data doesn't flow until find.screen is the right one.

[jamonholmgren]

:+1:

[GantMan]

"timing" was it grabbing the wrong screen in some instances?

[skellock]

Yep. Might be good to map out the timing of things. I had a similar problem where a style sheet styler called within on_load would have the previous screen.