Added @SerializerAlias annotation for add automatic XML alias for
SerializerEngine
Modified Configuration interfaces and ConfigurationImpl to extend
config.
Configuration now save in XML instead properties file
Configuration file now is juoserver.config instead juoserver.properties
Corrected CoreImpl  ServerImpl for handle new configuration interface
If 'juoserver.conf' don't exists (for example first run) create default
config file
Added in pom.xml google relections dependency