1073 sort and count

[mpaiva]

I am proposing a few elements to improve the navigation and readability of the fact sheet:

1. Table of contents - Improved navigation for keyboard-only users by adding the three headings in the Table of Contents:

   • Signed by
   • List of signatories
   • Add your name to the list

2. List of signatories - Added a heading for the "List of signatories" to improve wayfinding and navigation

3. Total Count - Added a script to count total number of list items for signatories.

4. Sort List - As the list continue to grow, being able to sort the list alphabetically provides a better navigation for screen reader users while enhancing the readability for all users

5. Reset list - just in case users want to see the order of which the list was signed.

6. Join the list - Created a heading to improve wayfinding and navigation, along with a brief description to inform users about the expected action.

[colabottles]

I like this PR and think these additions would make a great improvement.

[mpaiva]

I like this PR and think these additions would make a great improvement.

Thanks for reviewing it. In the future, I would like to propose a skip-to menu to improve the navigation.