Update Language Merging to Support Projects with Multiple Additional Repositories

[jphamtv]

Fixes #5160

What changes did you make?

• _projects/civic-tech-index.md:
  • Updated additional-repo-ids format to enable support for multiple additional repositories.
     
• _layouts/project.html:
  • Applied Liquid's join filter to convert multiple additional repository IDs from a project's Markdown file into a comma-separated string.
     
• assets/js/projects.js:
  • Modified JavaScript logic to enhance the merging of languages from multiple repos associated with a project.
     
• assets/js/current-projects.js:
  • Updated JavaScript logic in the retrieveProjectDataFromCollection function to merge languages from multiple repos associated with a project more efficiently.
  • Refined code formatting within this function for better readability, maintainability, and consistency.

Why did you make the changes (we will use this info to test)?

• These changes upgrade the existing language display feature to accommodate projects with more than two additional repository IDs in the Markdown file.

Screenshots of Proposed Changes Of The Website (if any, please do not screen shot code changes)

No visual changes to the website.

[github-actions]

Want to review this pull request? Take a look at this documentation for a step by step guide!

From your project repository, check out a new branch and test the changes.

git checkout -b jphamtv-display-languages-multi-repos-5160 gh-pages
git pull https://github.com/jphamtv/hackforla-website.git display-languages-multi-repos-5160

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Note that CONTRIBUTING.md cannot previewed locally; rather it should be previewed at this URL:

https://github.com/jphamtv/website/blob/display-languages-multi-repos-5160/CONTRIBUTING.md  

[t-will-gillis]

avail: 2/11
eta: 2/11

[t-will-gillis]

New eta: 2/13

[t-will-gillis]

Hey @jphamtv Fantastic work! I am able to confirm that "Civic Tech Index" in Docker matches the live site, and did not find any discrepancies when checking some of the other projects. The code edits appear to satisfy the other criteria (no additional-repo-ids, with the add'l repo but empty, with one add'l repo, and with multiple add'l repos. )

And great job picking up the minor edits (projectLanguageArr --> projectLanguageArray, semicolons, etc.)- thanks for tackling this issue!

[jphamtv]

@t-will-gillis - thanks for the feedback and review!