Añado el marcado de servidores vanilla del issue #29 a la base de datos del servidor de cluster.

 On branch issue_29_30
 Changes to be committed:

	modified:   database/ClusterServerDB.sql
	modified:   database/clusterServer/clusterServerDB.py
	modified:   database/tests/ClusterServerDBTest.sql
	modified:   database/tests/clusterServerDBTests.py
	modified:   database/utils/connector.py