Uses BrokerContainer to add new agents.
- Starts to use the classes of the project EnergyBrokers.
Stores the AsBoxs that participates in the simulation.
 - Removed the unnecessary actions related to the initialization of the Brokers Container.
 - Refactoring: Removed all old classes that read groups from the database.
Refactored the code that uses Google Guice.
- Added Utils class in order to create the Injector.
Use the EnergyAgents project to interact with the agents platform.
Adapted to the changes of the project EnergyAgents.
ASPEM doesn't need to connect to the XMPP server.
Updated gitignore.