FPSSample/README shows an 'open' or 'serve' button next to each level in the project tools window. Their Project Window: However, I don't have an 'open' button or 'serve' button. My Project Window: I believe I cloned the project correctly with GitHub using LFS because the size of > 30 GB. However the first time I opened the project by double-clicking on the UISetupScene file which led to a lengthy import process. Is there more I need to do before I see the 'open' or 'serve' buttons?