The <SpecificName> and <Actor> values do not belong in the generic templates, they should be in the specific templates in the sub-folders.
This patch:
* removes <Actor> from the generic `template_*` files
* adds the appropiate actors to their specific children in the cases they were not yet included there
* removes <SpecificName> from the generic `template_*` files
* adds the appropiate specific names to their specific children in the cases they were not yet included there
* removes <GenericName> from the `gaia/ruins/*` files
* removes <GenericName> from the `gaia/treasure/*` files
* removes <Icon> from the `gaia/treasure/*` files if it's identical to the parent template
<Actor> is still present in the following generic templates:
* template_formation.xml
* template_unit_catafalque.xml