Add missing space to `th` of `e_type_table`
Adapt to changes of `GTW.RST.TOP.MOM.Admin`

* Derive `_DB_E_Type_` from `GTW.RST.TOP.MOM.Admin.E_Type_Mixin`, not
  `GTW.RST.TOP.MOM.MF3.E_Type_Mixin`

* Factor `Field.Created` to `GTW.RST.TOP.MOM.Field`
Update, improve translations (L10N)