I made a number of small tidy-ups to the contrib version before adding this here:

  - fixed some language string names
  - renamed a capability from deletecompleteds to deletesubmissions (can we use "submissions" everywhere?)
  - got rid of language packs (moved english to correct location)
  - deleted 'pics' type (it needs to be rewritten to use user files in moodledata)
  - moved changelog into README.txt
  - moved captcha font out of subdir
  - bumped version to today

Thanks very much to Andreas Grabs for all your work on this module so far, and congratulations!   :-)