* Move from env variables to SiteConfig
Related to #5384
This PR only deals with the first remaining part outlined in the issue, starting to use existing SiteConfig keys instead of the env variables.
* Restore Envfile to original version for now
* Preload organization, not user
* Preload users only when needed
* Pre-load podcasts for podcast episodes in API
* Avoid eager loading error by loading rating votes separately
* Preload associations for moderation
* Preload user comments in trees
* Preload organization for non org dashboard and cleanup queries
* Optimize ArticleSuggester to only load N articles at need
* Remove eager loading and pass variables to partials for easier debug
* Reorganize tags validation code and ignore actsastaggableon eager loading issues
* Remove unused eager loading and bring up comments relation
* Preload podcasts when loading podcast episodes
* Fix views specs
* Make sure ArticleSuggester never returns duplicates
* Remove commented code
* Re-trigger build
* Move suggested articles back to view to respect fragment caching
* Fixed HTML errors in /app/views/additional_content_boxes
* Fixed indentation
* Fixed linting error in /app/views/comments
* Fixed indentation in /app/views/html_variants
* Fixed HTML errors + Fixed indentation in /app/views/internal
* Fixed HTML errors + Fixed indentation in /app/views/layouts
* Fixed indentation in /app/views/mailers
* Fixed indentation in /app/views/moderations
* Fixed HTML errors + Fixed indentation in /app/views/notifications
* Fixed HTML errors in /app/views/pages
* Fixed HTML errors + Fixed indentation in /app/views/social_previews
* Fixed indentation in /app/views/stories
* Fixed indentation in /app/views/stripe_subscriptions
* Fixed indentation in /app/views/tags
* Fixed indentation in /app/views/users