[scribus] A new Scripter API documentation

[ale rimoldi]

hi martin

> Have the script produce clear mentions of the date and the concerned
> Scribus version for each page or at least on the start-page.

for now, i will keep on documenting the state of the current
development code (as synced on my own computer).
version numbers and dates have only a limited interest : - )

but i've now put some more code in the script and now it writes at the
end of the index the information about the scribus version used to
generate the doc and the date the script has been run.

btw, the scripter should work on any computer and you can easily get a
documentation for the exact version of scribus on your computer : - )
... at least, getting the markdown files should be trivial.

ciao
a.l.e