dom/element: fix scroll.to implementation
dom/element: fix scroll.to implementation

scrollTo isn't defined for Element, got the same result by combining 
scrollTop and scrollLeft.

ref: https://developer.mozilla.org/en-US/docs/Web/API/Element

merongivian/opal-browser,ajjahn/opal-browser,davispuh/opal-browser,opal/opal-browser,ajjahn/opal-browser,Mogztter/opal-browser,jgaskins/opal-browser,merongivian/opal-browser,Mogztter/opal-browser,Mogztter/opal-browser,opal/opal-browser,opal/opal-browser,ajjahn/opal-browser,jeezs/opal-browser,jgaskins/opal-browser,merongivian/opal-browser,davispuh/opal-browser,opal/opal-browser,jeezs/opal-browser,jeezs/opal-browser,jgaskins/opal-browser,davispuh/opal-browser