Spanish translation: IDEview / Toast Settings Saved

[oruburos]

I have verified that this pull request:

• has no linting errors (npm run lint)
• is from a uniquely-named feature branch and has been rebased on top of the latest master. (If I was asked to make more changes, I have made sure to rebase onto master then too)
• is descriptively named

[oruburos]

@andrewn Can you have a look at this?

[andrewn]

👍