Add new _*artists_countries variables to autocomplete list.

[rdswift]

Summary

• This is a…
  • Bug fix
  • Feature addition
  • Refactoring
  • Minor / simple change (like a typo)
  • Other
• Describe this change in 1-2 sentences: Adds the new %_albumartists_countries% and %_artists_countries% variables to the script editor autocomplete list.

Problem

Two new variables %_albumartists_countries% and %_artists_countries% were added in #2627 but were not added to the script editor autocomplete list at that time (because I forgot).

• JIRA ticket (optional): PICARD-XXX

Solution

This change adds the new %_albumartists_countries% and %_artists_countries% variables to the script editor autocomplete list.

Action

Additional actions required:

• Update Picard documentation (please include a reference to this PR)
• Other (please specify below)

None.

[phw]

Thanks, let's merge this.

This is so easy to forget to update. Maybe we should move the EXTRA_VARIABLES constant to constants. Maybe inside tags.py, so we have all tags and variables in one place. @rdswift @zas what do you think?

[zas]

Thanks, let's merge this.

This is so easy to forget to update. Maybe we should move the EXTRA_VARIABLES constant to constants. Maybe inside tags.py, so we have all tags and variables in one place. @rdswift @zas what do you think?

Yes, I agree -> #2634