Easier property writing

- MappingEmpty: deals with FNFE
- easier property setter
- empty values instead of exceptions
Merge pull request from objectos/moe_08_setter

MOE_08: Setter
Exposes Etcs.readProperty
Merge pull request from objectos/moe_09_getter

MOE_09: Getter
WayEtc => copy to Directory
Merge branch 'moe_10_resources_to_dir'

MOE_10: Resources to Directory