Comment 12 for bug 924234

Here is my work :

https://code.launchpad.net/~akretion-team/openobject-addons/trunk-fix-l10n_fr-round1

I haven't initiated the merge proposal yet ; I plan to do it very soon. All comments are welcomed. I called this branch "round1", because I don't intend to fix all issues with l10n_fr right now. There will be other merge proposals (round2, round3, ...) in the future to fix more points.

In this "round1", there are all the changes proposed by Frederic in comment #7 along with some other changes that are listed in the commit messages.

@hedererjs : the implementation for VAT in the EU is similar to the solution that you propose ; the implementation is not the same (we replace the VAT 19.6% tax by two taxes), but the result is the same.