fix on_scroll_move to obey scroll_distance
fix on_scroll_move to obey scroll_distance

the function did not correctly check for minimum distance to travel before performing a scroll
tony/kivy,bionoid/kivy,KeyWeeUsr/kivy,KeyWeeUsr/kivy,darkopevec/kivy,matham/kivy,autosportlabs/kivy,bionoid/kivy,kivy/kivy,rnixx/kivy,rnixx/kivy,LogicalDash/kivy,rafalo1333/kivy,akshayaurora/kivy,autosportlabs/kivy,kivy/kivy,inclement/kivy,Cheaterman/kivy,kived/kivy,rnixx/kivy,jkankiewicz/kivy,tony/kivy,janssen/kivy,inclement/kivy,KeyWeeUsr/kivy,manthansharma/kivy,janssen/kivy,akshayaurora/kivy,jegger/kivy,darkopevec/kivy,manthansharma/kivy,kived/kivy,akshayaurora/kivy,kived/kivy,KeyWeeUsr/kivy,LogicalDash/kivy,manthansharma/kivy,jkankiewicz/kivy,Cheaterman/kivy,bionoid/kivy,autosportlabs/kivy,jegger/kivy,Cheaterman/kivy,darkopevec/kivy,janssen/kivy,manthansharma/kivy,matham/kivy,tony/kivy,matham/kivy,LogicalDash/kivy,jegger/kivy,rafalo1333/kivy,inclement/kivy,jkankiewicz/kivy,Cheaterman/kivy,LogicalDash/kivy,jegger/kivy,rafalo1333/kivy,matham/kivy,janssen/kivy,darkopevec/kivy,bionoid/kivy,jkankiewicz/kivy,kivy/kivy