Update index to include de version
Major reshuffle, reproduceable i18n

- Cleaned up folder structure. All normal source now just resides in
  source folder, all build files reside in _build.
- Configuration is now just in source/conf.py
- fabfile updated to allow for reproduceable and maintainable i18n.
- The translations in `source/_locales/de/LC_MESSAGES/` should be
  reworked into the proper files under the `source/locale/` folder.
- This is following the i18n practices given by
  http://sphinx-doc.org/latest/intl.html and
  https://pypi.python.org/pypi/sphinx-intl#quickstart-for-sphinx-translation
- Introductory index.html made slightly fancier!
Fix typo
Reintroduce existing translations from pybeginners.po
Merge pull request #42 from OpenTechSchool/i18nreshuffle

expand fabfile to allow building/compiling translations

clean up source code

index now presentable

configuration now in one place