update .pot file and review spanish translations

[crodriguezbrito]

Proposed changes

The following PR will update the .pot file and fix some strings for the Spanish version #PRESS10-194

Type of Change

Production

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update
• Refactoring / housekeeping (changes to files not directly related to functionality)

Development

• Tests
• Dependency update
• Environment update / refactoring
• Documentation Update

Video

Checklist

• I have read the CONTRIBUTING doc
• I have viewed my change in a web-browser
• Linting and tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[circlecube]

@crodriguezbrito we did a lot of translation work on this today, might be best to restart from main as this will have a mind-numbering merge conflict now.

[crodriguezbrito]

Hello @circlecube
I fixed the merge conflicts and I updated the es_ES translation.
When you have time, could you check it?

[circlecube]

Noticed in the latest plugin release that there are some missing translations for performance app. Which brought be looking at this PR again. I'm seeing that it removed quite a few translations. Can we get these brought back somehow? It may take some manual updates in the PO files, and then let the i18n command update the PHP and json language files.

@arunshenoy99 & @crodriguezbrito cc @wpscholar