You can now select which layers are currently visible in the object list
view, and makes the performance *so much better* because it doesn't load
everything by default.
Still not great loading times, but it's now somewhat bearable on debug
builds. It now doesn't try to load duplicate models at all. Most of the
time is actually spent inside of Physis parsing the model, which I'll
have to tackle there.
Unlike the Gear Editor, we don't need these later (for export and such -
yet!) and can be safely removed. This significantly reduces the memory
pressure from loading maps, but it's not all sunshine and rainbows yet.
Now we can see where each object is (there's no way to tell them apart
yet.) The rendering is also extremely inefficient, so don't be surprised
if it slows down on your computer.
