Revert "don't allow views from another window to be next/previouskeyViews"
Revert "don't allow views from another window to be next/previouskeyViews"

This reverts commit 7fab8d9782d4604c4441e48701f9207e4a2b4229.

This breaks the repsonder chain if it is defined in a view that has no window yet.
Details and reduction here: https://github.com/cappuccino/cappuccino/commit/7fab8d9782d4604c4441e48701f9207e4a2b4229#commitcomment-2781849

deltaprojects/cappuccino,enquora/cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,Rosch/cappuccino,cacaodev/cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,AlexanderMazaletskiy/cappuccino,mrcarlberg/cappuccino,Dogild/cappuccino,deltaprojects/cappuccino,Dogild/cappuccino,tancred/cappuccino,zittix/cappuccino,Rosch/cappuccino,zittix/cappuccino,wangshijin/cappuccino,zittix/cappuccino,AlexanderMazaletskiy/cappuccino,mrcarlberg/cappuccino,mrcarlberg/cappuccino,primalmotion/cappuccino,tancred/cappuccino,koamac/Cappuccino,krodelin/cappuccino,enquora/cappuccino,koamac/Cappuccino,mrcarlberg/cappuccino,rgv151/cappuccino,krodelin/cappuccino,koamac/Cappuccino,zittix/cappuccino,enquora/cappuccino,deltaprojects/cappuccino,kidaa/cappuccino,Dogild/cappuccino,daboe01/cappuccino,kidaa/cappuccino,mrcarlberg/cappuccino,primalmotion/cappuccino,rgv151/cappuccino,daboe01/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,daboe01/cappuccino,enquora/cappuccino,kidaa/cappuccino,wangshijin/cappuccino,FrankReh/cappuccino,daboe01/cappuccino,AlexanderMazaletskiy/cappuccino,rgv151/cappuccino,zittix/cappuccino,enquora/cappuccino,tancred/cappuccino,cacaodev/cappuccino,cappuccino/cappuccino,cacaodev/cappuccino,Rosch/cappuccino,Dogild/cappuccino,koamac/Cappuccino,koamac/Cappuccino,tancred/cappuccino,wangshijin/cappuccino,cappuccino/cappuccino,krodelin/cappuccino,Rosch/cappuccino,cappuccino/cappuccino,FrankReh/cappuccino,FrankReh/cappuccino,enquora/cappuccino,cacaodev/cappuccino,cacaodev/cappuccino,zittix/cappuccino,FrankReh/cappuccino,zittix/cappuccino,primalmotion/cappuccino,FrankReh/cappuccino,primalmotion/cappuccino,koamac/Cappuccino,Rosch/cappuccino,daboe01/cappuccino,cappuccino/cappuccino,AlexanderMazaletskiy/cappuccino,daboe01/cappuccino,mrcarlberg/cappuccino,tancred/cappuccino,rgv151/cappuccino,mrcarlberg/cappuccino,deltaprojects/cappuccino,deltaprojects/cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,tancred/cappuccino,AlexanderMazaletskiy/cappuccino,deltaprojects/cappuccino,daboe01/cappuccino,FrankReh/cappuccino,FrankReh/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,Dogild/cappuccino,FrankReh/cappuccino,krodelin/cappuccino,Rosch/cappuccino,enquora/cappuccino,krodelin/cappuccino,cacaodev/cappuccino,Rosch/cappuccino,AlexanderMazaletskiy/cappuccino,kidaa/cappuccino,krodelin/cappuccino,deltaprojects/cappuccino,rgv151/cappuccino,kidaa/cappuccino,kidaa/cappuccino,rgv151/cappuccino,cappuccino/cappuccino,mrcarlberg/cappuccino,krodelin/cappuccino