Info / styling improvements hacked on.

- Request URI info debug details
- Absolute position rather than fixed (not sure why this was fixed?)
- Force high z-index on hover, useful for overlapping ESI's
- Darker red on hover for clarity
- Removed !important's, these should be overwritable if necessary, inline styles will take priority anyway
- Switched out inlines styles for hover styles / clarity
- Switched to sprintf for readability