fixes https://github.com/TryGhost/Team/issues/2085
Don't load relations we don't need anymore for the posts table. And
reload the individual post when we open the analytics page with more
relations that we actually need.
- Made the majority of the row go to the editor instead
- Removed illegal nested hyperlinks and cleaned up other markup
- Removed some feature flag code around this page and fixed styles for them
- Improved some dark mode styling
- Lots of refactoring with code and styles
refs https://github.com/TryGhost/Team/issues/2223
refs https://github.com/TryGhost/Team/issues/1025
- added `{{humanize-recipient-filter}}` helper that converts an NQL recipient filter into a more readable format
- updated posts list to use the new helper in the sends column tooltip shown when hovering with the mouse
no issue
- relocated screen-specific components into a separate `posts-list/` directory as part of the move to keep the top-level `components/` directory for re-usable components
