Insert table wizard

It would be useful to have a popup inserter for inserting tables.

Sequence:

• click "Insert table"
• window pops up like the "insert link" window
• the first screen of the window ask how large you would like the table (rows x columns) and whether or not you would like a header row
• the second screen of the window has the table laid out in HTML, with a text field in each cell for the user to fill in (header row is a header row if they selected a header row)
• click 'insert' and the table is inserted into the page!