Corrijo el issue #65 y un bug gordo: el servidor de cluster no recopilaba periódicamente el estado
de los servidores de máquinas virtuales.

 On branch issue_65
 Changes to be committed:

	modified:   "Ficheros de configuraci\303\263n /ClusterServer_settings.conf"
	modified:   src/CygnusCloud/clusterServer/connector/endpoint/webServerEndpoint.py
	modified:   src/CygnusCloud/clusterServer/connector/threads/databaseUpdateThread.py
	modified:   src/CygnusCloud/clusterServer/constants.py
	modified:   src/CygnusCloud/clusterServer/loadBalancing/simpleLoadBalancer.py
	modified:   src/CygnusCloud/clusterServer/main.py
	modified:   src/CygnusCloud/clusterServer/reactor/clusterServerReactor.py
	new file:   src/CygnusCloud/clusterServer/threads/__init__.py
	new file:   src/CygnusCloud/clusterServer/threads/vmServerMonitoringThread.py
	modified:   src/CygnusCloud/database/ClusterServerDB.sql
	modified:   src/CygnusCloud/database/clusterServer/clusterServerDB.py