Buffer input tuples separately for each slave in DeluxeAgent

All input values from the slaves were buffered in a common TokenizedStorage in agents, which is now modified so that there is a TokenizedStorage corresponding to each slave of an agent.

The original storage implementation restricted the number of input values that an agent could handle.
This fix allows agents to have any number of slaves with each slave providing a tuple up to 12 elements.

I have also removed definitions that became unused.