Add 'es' themes translations

[mondeja]

No description provided.

[waylan]

Awesome! Great to see more translations already. Could you add "Spanish" to the note in the release notes? Also, the language needs to be added to the list of supported languages for each theme in docs/user-guide/choosing-your-theme.md.

We should probably update the translation docs to reflect the need to do that when new locales are added.

[ultrabug]

@waylan did you ever consider issue templates to address this as a complement to documentation?

[waylan]

@waylan did you ever consider issue templates to address this as a complement to documentation?

Personally, I hate them when I interact with other projects. Therefore I refuse to inflict them on others. Yes, that is really how I feel about them.

[mondeja]

Could you add "Spanish" to the note in the release notes? Also, the language needs to be added to the list of supported languages for each theme in docs/user-guide/choosing-your-theme.md.

We should probably update the translation docs to reflect the need to do that when new locales are added.

Done in c869947