Well done! Rated 3 out of 5 stars

Very nice.
But it would be even better if:
- we were not prompted to add the toolbar button on first startup (people who want the button can add it manually, but most people don't need it - there are other way to access page infos)
- we could *edit* form and link data (say, convert a get form to a post one, turn a hidden field visible, etc.)
- "tab"* icons would be different from the "media" one.

* I don't know if we can still call these buttons "tabs" - anyway they have the same effect.