Wikimedia Bugzilla is closed!

This patch localizes the "dismiss" message for Spanish. It uses the word
"esconder", which means "hide".

I'm not sure whether using "ignorar" ("ignore") as in the Portuguese
localization is more appropriate, but it looks like pt.wikipedia.org is actually
using "fechar" ("close"). In Spanish, that would be "cerrar". I stuck with the
equivalent of "hide" since that's what's used on en.wikipedia.org and it seems
to make the most sense to me.