add autogenerated ToC - export depend configs

- Note that the ToC provided by mpdf is quite rigide.

===Note===
replace / in header_odd.html by pagenumSuffix = '/' to have only / if
the  total pagenumber is defined for that page. (e.g. in autogenerated
ToC it is not defined)
Not default used because pagenumSuffix can create double // in already
existing non-default templates
update plugin.info.txt