Brian creation

I added creation mode. It works but there's no way to launch it directly. I'm not sure where you guys want to add the option Still have to make sure that some objects don't collide with each other and that the launcher is movable. 

Saving works but i was unable to save the level in the Level folder. 

Retouched toolbox screen to make it work better and modified it so that deathtrap and treasure only appear when you are building a custom level.