Clean the repository

[Ezibenroc]

Once we merge reverse_predicates into master we should clean the repository.
Do not do it before, this branch is already huge (please do less modifications per pull request, it is really painfull to review/understand).
Do not begin new stuff, we really need to clean what already exists.

Non exhaustive list:

• Better documentation.
  • No more French (by the way, there is also French in the comments of the code).
  • Better structure (a Wiki?)
• Better code.
  • Avoir long and complicated functions like processQuestionInfo.
  • Avoid variable names like r or w.
  • Some functions should be class methods.
  • Some class methods should have a @staticmethod decorator (for instance QuotationHandler.getReplacement).
  • I think this kind of hardcoded code to select the map to use is dirty. I am not doing this when I code in C, we really should not do it when we code in Python...
  • We should respect code conventions, like putting a space after each comma.

Feel free to complete this list.

---

TODO:

• Spaces after commas.
• nounDB.py
• preprocessing.py
• initialMerge.py
• dependencyTree.py
• Remainder.

[yhamoudi]

No more French (by the way, there is also French in the comments of the code).

My bad for the comments in french, they have been translated. Concerning the other parts in french, they should be only in documentation/ and they are not supposed to be read by "external" people (i can remove them from the repository, but it's more convenient to put them here...)

Avoir long and complicated functions like processQuestionInfo.

I tried to shortened it.