doc: added header for recycleview/layout.py
doc: added header for recycleview/layout.py

And pep8 stuff

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