Updated docs/polytech

  * we may say that the passed first phase is passed:
    - parsing functions are test, for that lua script were written as
      well input test data;
    - function to read DB data was written and tested with the help of
      script 'db-routines-test.lua';
    - to test all functions the 'riod-test.lua' script were written;
    - script 'gdf-pt-mrt-test.lua' was written to test routines to
      create temp directory, intermediate LaTeX file, its typesetting,
      moving resulted PDF file into original directory and removing temp
      directory;
    - to make things easy supplementary function 'mess' was written and
      placed into separate module;
  * (TOP)/styles/org-mode-default.css: updated, sync with org-mode
    updates.

Signed-off-by: Vladimir Lomov <lomov.vl@gmail.com>