- NavMenu: show short date in update-check tooltip when last check was not today
- Settings modal: expand/collapse all sections with bi-arrows-expand/collapse icons
- Effective config: add Expand all button (bi-arrows-expand), same icon style as toolbar
- Rename settings-modal.js to dialog.js; add config-option-help.js, JS extension helpers
- Config option help modal and client settings/dialog wiring updates
