Level Editor

1. Added 3 new classes to make the level editor work
  * GameEditorScreen
      * To launch the GameplayScreen from the editor hit enter
      * To launch the tool box right click
  * ToolboxScreen
  * IlevelObject. 
2. Made Some changes to classes
  * GamePlayScreen has a new constructor
  * Simulation constructor does not automatically initialize the body. GameplayScreen calls that method.
  * Level Status Screen launched the game editor
  * Added movement methods to every level object class that can move.
3. Things that still need to be done:
  * Move the Launcher
  * Limit the Platforms that can be added
  * Add more platforms to the Toolbox, or populate depending on level
  * Add goal, deathtrap and treasure.to tool box
  * Prevent GameplayScreen from launching if there is no goal.
  * Level saving.
  * depending on template limit which objects can be moved.

I know i have more to do but i wanted to submit something by Friday night.