Allow hovering over the window decoration to change the focus if the parent container is split horizontally or vertically.
Allow hovering over the window decoration to change the focus if the parent container is split horizontally or vertically.

fixes #1056

MForster/i3,Kaligule/i3,yin/i3,FauxFaux/i3,pronobis/i3,ccryx/i3,Kaligule/i3,Chr1stoph/i3,stapelberg/i3,avrelaun/i3,drbig/i3,jubalh/i3,mh21/i3,avrelaun/i3,pronobis/i3,strake/i3,yin/i3,cornerman/i3,dg-ratiodata/i3,tcreech/i3,Matmusia/i3,FauxFaux/i3,i3/i3,dg-ratiodata/i3,stapelberg/i3,EvilPudding/i3,Matmusia/i3,acrisci/i3,Airblader/i3-original,stapelberg/i3,shdown/i3,saksham0808/i3,acrisci/i3,ccryx/i3,cornerman/i3,Airblader/i3-original,jubalh/i3,cornerman/i3,avrelaun/i3,yin/i3,strake/i3,Chr1stoph/i3,Kaligule/i3,saksham0808/i3,MForster/i3,dg-ratiodata/i3,Airblader/i3-original,Matmusia/i3,MForster/i3,Airblader/i3,saksham0808/i3,mh21/i3,yin/i3,avrelaun/i3,Kaligule/i3,mh21/i3,shdown/i3,strake/i3,dg-ratiodata/i3,tcreech/i3,Airblader/i3,jubalh/i3,strake/i3,Airblader/i3,simonnagl/i3,mh21/i3,stapelberg/i3,drbig/i3,EvilPudding/i3,tcreech/i3,Airblader/i3-original,drbig/i3,strake/i3,tcreech/i3,simonnagl/i3,ccryx/i3,simonnagl/i3,Matmusia/i3,i3/i3,Airblader/i3-original,FauxFaux/i3,acrisci/i3,ccryx/i3,i3/i3,pronobis/i3,saksham0808/i3,EvilPudding/i3,Chr1stoph/i3,acrisci/i3,Chr1stoph/i3,shdown/i3,cornerman/i3,FauxFaux/i3,i3/i3,Airblader/i3,simonnagl/i3,EvilPudding/i3,acrisci/i3,shdown/i3,jubalh/i3,pronobis/i3,MForster/i3,drbig/i3