auto formatting

[klaushauschild1984]

Implement a formatting feature.
A formatted ImpEx should look like this:

INSERT Product ; code[unique=true] ; name[lang=de]
               ; 000001            ; Produkt

What you can see here is that every corresponding semicolon is aligned to each other. The "width" of a cell is defined by the max length of all values included plus the header.