[StGaensler]

It was much work but I have tried it:
Here is a new version supporting colspans!

BUT this is a beta version!
You can try this version but use it on your own risk!
Currently colspan is not supported in WYSIWYG-Editor so the plain code is displayed

To add a colspan to a cell simply write {colsp=X} at the beginning of the cell. X is the number of cells the cell should be big.

If you find bugs please report them here.

Good night (I'll go to bed now)
Stefan

Edit: I wrote a better version than yesterday so I edited my post
The bugs mentioned before have been taken out

There is only one thing to consider when using colspan and sort: Cells "behind" the colspan are internally filled with "!!!colspan" and can be sorted as every other cell.

EDIT: removed attachment (4 views) - new version is out: post #915835