Added Spanish translation for ClonoOS WebUI

[LightBusterX]

I'm not a very experienced developer, but I've been testing ClonOS and it has potential.

Wanting to contribute somehow I've forked your repository and added new files for Spanish translations for the ClonOS WebUI. I don't know if there are more texts to translate aside from those two I've found. If there are, please, tell me which ones and I'll happily translate those too.

[olevole]

LGTM!

¡Gracias! ¡Estoy muy contento de agregar español!

I am sure that the texts will be added, since I am slowly starting to work on the next release.