Exchange of messages between agents with sessions

[YerayMM]

In order to enable the exchange of messages between agents while executing a code like the following:

from pade.acl.aid import AID
from pade.misc.common import PadeSession
from agents.prosumer_agent import AgentProsumer
from agents.consumer_agent import AgentConsumer

def config_agents():
    agents = list()

    port_prosumer = 8500
    agent_prosumer_name = 'agent_prosumer_{}@localhost:{}'.format(port_prosumer, port_prosumer)
    agent_prosumer = AgentProsumer(AID(name=agent_prosumer_name))
    agents.append(agent_prosumer)

    port_consumer = 8501
    agent_consumer_name = 'agent_consumer_{}@localhost:{}'.format(port_consumer, port_consumer)
    agent_consumer = AgentConsumer(AID(name=agent_consumer_name))
    agents.append(agent_consumer)

    # Declaration of the PadeSession object
    pade_session = PadeSession()
    # Addition of the list of agents
    pade_session.add_all_agents(agents)
    # Registration of users on the platform
    pade_session.register_user(username='yeraymm', email='yeraymm@usal.es', password='12345')

    return pade_session


if __name__ == '__main__':

    s = config_agents()
    # initialization of the execution loop of the agents
    s.start_loop()

I have made changes to:
- core/new_ams.py: in order to allow the use of initialized sessions in the AMS constructor
- misc/common.py: to fix a bug in the in the loop that starts agents which call AgentProcess, a non-defined function.
- core/new_ams.py: to update the table of addresses of each agent in the platform without waiting.