PR: 6098 - footer work

[rfultz]

Summary

• Resolves #6098

Added the taxpayer statement to the footer, and added a footer link to the accessibility statement

Required reviewers

• UX

Impacted areas of the application

Changed the site footer links and added the taxpayer statement to the footer, site-wide

Screenshots

Footer link layouts	Taxpayer statement
⬅️ www — local ➡️	⬅️ www — local ➡️
⬆️ www — local ⬇️	⬆️ www — local ⬇️

Related PRs

None

How to test

• pull the PR
• npm i
• npm run build
• ./manage.py runserver
• check any page on the site
• check multiple widths
• check that the accessibility statement link works and none of the others were broken (unlikely)
• since the homepage css is optimized, especially make sure it looks right

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.99%. Comparing base (cf19bed) to head (9c7e453).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #6279 +/- ## =========================================== - Coverage 78.00% 77.99% -0.02% =========================================== Files 291 291 Lines 9414 9414 Branches 681 681 =========================================== - Hits 7343 7342 -1 - Misses 2071 2072 +1 ```

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