Optimizations (Read Description)

I removed the huge black area on most indoor area's background. I did by
selecting it, deleting it and then cropping the picture. Then in the
room editor you need to turn of tile hor and tile vert. Then adjust the
x and y variables in the room editor to fit the already in place
objects. After this I set the background color to black and then it
looks the same! This should make building and saving a lot faster.