removing the onsave alert; replace w/ tooltip

friends don't let friends use `alert()` ;)

the tooltip disappears after 500ms
![screen shot 2013-07-12 at 10 57 51 pm](https://f.cloud.github.com/assets/112170/793333/5a6d0326-ebf8-11e2-8b47-56b48aa4fbcf.png)