Devel

- Fixes #121 by changing mode depending on language
- add debug option ?debughtml=html
- add namspace export option with urlparameters:
  - do=export_pdfns
  - pdfns_ns=name:space
  - pdfns_title=Test+title
optional:
  - pdfns_order=date (accepts: natural(default), date or pagename)
  - pdfns_depth=1 (accepts: positive numbers, default 0)