feat: Modern footer

[kesara]

This PR includes multiple updates:

• chore: Improve test coverage (#395) - Fixes #378
• feat: Allow empty cells in typed tables (#403) - Fixes #282
• chore: Remove the Donate button (#409) - Fixes #407
• ci: Run tests for feat/modern-footer
• ci: Add feat/modern-footer branch to codeql analysis
• feat: Implement a modern footer (#400) - Fixes #377
• fix: BlogPage may only be created under BlogIndexPage (#401) - Fixes #337, fixes #271
• feat: Styling for blockquotes (#402) - Fixes #321
• feat: Composite title for topic & author feeds (#408) - Addresses #405
• build: Use torchbox_temp as database name
• fix: Reduce footer line heights (#446) - Addresses https://github.com/ietf-tools/www/issues/377#issuecomment-2125924392

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 99.82238% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 96.08%. Comparing base (ec2d7a8) to head (e368cf2). Report is 8 commits behind head on main.

Files	Patch %	Lines
ietf/utils/blocks.py	94.44%	1 Missing :warning:
ietf/utils/models.py	92.85%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #448 +/- ## =========================================== + Coverage 82.81% 96.08% +13.27% =========================================== Files 126 153 +27 Lines 2612 3293 +681 =========================================== + Hits 2163 3164 +1001 + Misses 449 129 -320 ```

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