Remove Accordion focus/blur()

Remove Accordion focus/blur()

There is a comment in the source on line 411 that asks the questions:
// TODO assert that the blur and focus triggers are really necessary, remove otherwise
I for one would say remove that stuff, or move it to the click handler at least. It causes issues with auto-rotating the accordion. If the next topic is below the viewport it will automatically scroll down, which is expected. Also a weird bug in FF that if you are on another tab and the next topic is focused it FF will switch back to that tab.

This is just my opinion, maybe it really is necessary.