Cierro el issue #162. Corrijo algunas erratas en los comentarios.

 On branch develop
 Changes to be committed:

	modified:   src/Infraestructura/clusterServer/database/ClusterServerDB.sql
	modified:   src/Infraestructura/clusterServer/database/image_state_t.py
	modified:   src/Infraestructura/clusterServer/database/server_state_t.py
	modified:   src/Infraestructura/virtualMachineServer/database/VMServerDB.sql