Entities leaving boundaries in rSim

[energy-in-joles]

Currently custom field sizing is strictly cosmetic for rsim. As a result, balls that go out of the specified FieldDimension or FieldBounds will be unretrievable and will stop at the standard ssl wall location in the simulator. This can be addressed by:

1. Full overhaul of the rsim simulator to allow for custom field sizes and configurable wall locations (proper fix)
2. Use teleport commands to reset the underlying rsim so that the entities are clipped to the borders (hackish, but easier)