Added meta flag for command line.

Added printout of parameters at start of program.
Rework of the application

New features:
- Inclusion of language/printed cards.
- Changes of xml-files structure/content. (See format.txt)
- Progress bar.
- More fine-grained control over processing. (Mainly for debugging
  purposes.)

Internal changes:
- Using JSoup for parsing html.
- Using a "proper" multi-threaded queue instead of pmap to allow for
  better progress tracking.