[Ifeffit] Athena 0.8.046 and the "%" character

[Mauro Rovezzi]

Hi folks,

I've just noticed a strange behaviour in Athena. Please, let me know if you
can reproduce this "error":

- Open a project with two mu(E)
- Merge them in chi(k) [noise weighted]
- Rename the "merge" group in "something%something_else"
- Save the new group as chi(k)
- Save the project

Well:

1. The generated .chi file contains nothing
2. Artemis fails to open the chi(k) from the Athena project (trapping an
error and showing nothing).
3. Re-doing everything *without the "%" character, works!*

Cheers,
Mauro