Allow user to set layout trigger and don't overwrite it.
Allow user to set layout trigger and don't overwrite it.

andnovar/kivy,manthansharma/kivy,autosportlabs/kivy,matham/kivy,jegger/kivy,darkopevec/kivy,kivy/kivy,janssen/kivy,rafalo1333/kivy,jegger/kivy,autosportlabs/kivy,rafalo1333/kivy,matham/kivy,Cheaterman/kivy,rafalo1333/kivy,rnixx/kivy,andnovar/kivy,inclement/kivy,jkankiewicz/kivy,bionoid/kivy,jkankiewicz/kivy,akshayaurora/kivy,manthansharma/kivy,manthansharma/kivy,kived/kivy,bionoid/kivy,janssen/kivy,manthansharma/kivy,rnixx/kivy,bionoid/kivy,kived/kivy,LogicalDash/kivy,darkopevec/kivy,kivy/kivy,jkankiewicz/kivy,KeyWeeUsr/kivy,jegger/kivy,el-ethan/kivy,andnovar/kivy,aron-bordin/kivy,jkankiewicz/kivy,Cheaterman/kivy,akshayaurora/kivy,matham/kivy,darkopevec/kivy,inclement/kivy,jegger/kivy,tony/kivy,kived/kivy,el-ethan/kivy,matham/kivy,Cheaterman/kivy,el-ethan/kivy,janssen/kivy,janssen/kivy,tony/kivy,KeyWeeUsr/kivy,aron-bordin/kivy,LogicalDash/kivy,akshayaurora/kivy,KeyWeeUsr/kivy,inclement/kivy,LogicalDash/kivy,autosportlabs/kivy,aron-bordin/kivy,kivy/kivy,KeyWeeUsr/kivy,darkopevec/kivy,rnixx/kivy,aron-bordin/kivy,bionoid/kivy,Cheaterman/kivy,LogicalDash/kivy,tony/kivy