Fix tabbed showcase example
Fix tabbed showcase example

'pos: self.parent.pos' was called when there was no parent & position and size were correctly set from parent anyway + replace old softboy path. ref #5007

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