There some kind of way to lock files I think with git http://gitolite.com/gitolite/locking.html
There is also the possibility of MultiEdit.
Or is possible that we write a plugin that makes diff-friendly files of levels and bps?
So I contacted Sourceforge to know if we could use their servers. Here is their reply:
> We are an OSS software hosting provider, and while we make a few exceptions for certain types of open data, generally we do not host third-party proprietary datasets.
So we can only host open datasets. So no Kite demo or whatever. we have several choices then:
Apparently Redmine is compatible with nginx http://www.redmine.org/projects/redmine/wiki/HowTo_configure_Nginx_to_run_Redmine
OpenProject allows subversion as well https://www.openproject.org/help/user-guides/repository/ (would prefer this one :))
So if every one is OK, you might start creating it ;)