Fixed an issue in project loading. No need to save a project with people and stands. Either one can be ommitted from the project save file.

This might just be the first release of this program. I believe everything works as expected and as documented. Just don't do some crazy shit with it. There are some minor issues, like what happens if you remove a stand that someone is assigned to, but that is a too much edge case for me right now. To be fixed soon.