Fix es.po

[IngrownMink4]

According to @ijiki16, my merge request has affected the compilation of the application due to some errors in the existing strings. I have released this patch and I hope it will fix the problem as soon as possible. And I apologize for the inconvenience caused.

What's fixed:

• Fill in empty text strings
• Fix spelling mistakes
• Fixed formatting
• Fix compatibility issues
• Some strings did not correspond to the original .pot template. I guess it was a mistake of the previous contributor.

Before including the patch, please check that there are no conflicts this time. I had to rewrite 60% of the text strings.