Use non-breakable space as numerical separator
Reading [1], I'm wondering if we should do the same. Of course Tryton doesn't suffer of the wrapping in the client but I foresee there could be issues in some reports if there is not enough space.
But of course if we change, we must check that the parsing in the client is not broken.
[1] https://twitter.com/alexisdlattre/status/685589034551394305