This feature has been recently integrated into Galette development branch! For the occasion, nightly Galette version has been updated, for whose who want to install and test it can do rigth now. See also Galette 0.9.4 modifications list (which may still evolve).
But I've also been thinking about others, and I've decided to put online a Galette demonstration version; which currently points on development branch. Ir's entirely resetted each night.
Please be aware all data are accessible for anyone, avoid abuses (and if you see something wrong, inform us).
To get logged in, use "adminweb" as login and password.