Provides a legacy status bar on which extensions' status can be dragged.
Also provides optional and configurable functionality for:
- Status Text, e.g. when your mouse is over a link, its text is displayed in the status bar.
A page loading Progress Meter.
- I place this in the top location bar. It's an unobtrusive bar overlayed at its bottom and does not displace the normal text.
Download Status. i.e. a download progress meter and text.