* changed required fields to optional in protobuf messages for chunks and tera arrays
+ added method createSerializationHandler() to class TeraArray.Factory
+ added class TeraArrayUtils which contains the former methods of class TeraArrays
* improved the implementation of the tera array registry (class TeraArrays)
* changed class UIMenuConfigAdvanced to use the new tera array registry
* changed class AdvancedConfig to use the new tera array registry