Fix missing counter and paginator in Community Help Center page

[joanagmaia]

Changes proposed ✍️

• Fix pluralization of list counter. Use pluralize package to pluralize or singularize a word based on the passed in count:
  • @param word — The word to pluralize
  • @param count — How many of the word exist
  • @param inclusive — Whether to prefix with the number (e.g. 3 ducks)
• Add app-pagination-sorter to Community help center page to change pagination size on sorter change
• Add emit handler to app-pagination-sorter on Reports page to change pagination size on sorter change

• Screenshots (front-end changes only)

Checklist ✅

• Label appropriately with type:feature 🚀, type:enhancement ✨, type:bug 🐞, or type:documentation 📜.
• Tests are passing.
• New backend functionality has been unit-tested.
• Environment variables have been updated
  • Front-end: frontend/.env.dist
  • Backend: backend/.env.dist, backend/.env.dist.staging, backend/.env.dist.staging.
  • Configuration docs have been updated.
  • Team members only: update environment variables in Password manager and update the team
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.
• All changes have been tested in a staging site.
• All changes are working locally running crowd.dev's Docker local environment.

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[mariobalca]

Thanks for addressing these! Looks good to me 🚢 it