[Localization] eToys viewer (Spanish)

[Chris Leonard]

Dear Spanish eToys localizers,

The term "viewer" has a specific usage in the eToys context.
Unfortunately it appears that this term is variously translated as
"visor" or "visualizador" in eToys strings.  It would be desirable for
a single consensus translation to be selected and then the Pootle
search function can be used to harmonize the translation across the
entire project for consistency.

cjl