title	issue
Adding variables and preview template format	NEXT-21002

Administration

Changed method load in src/app/component/entity/sw-one-to-many-grid/index.js to add event load-finish.
Added component sw-settings-country-sidebar, sw-settings-country-preview-template-modal in src/module/sw-settings-country/component.
Added in src/module/sw-settings-country/page/sw-settings-country-detail/index.js
- Changed method loadEntityData to prevent infinity loop.
Added in src/module/sw-settings-country/page/sw-settings-country-detail/sw-settings-country-detail.html.twig
- Added block sw_setting_country_tabs_address_handling to show address-handling tab.
- Added block sw_setting_country_tabs_extension
Changed in src/module/sw-settings-country/component/sw-settings-country-state/index.js
- Added computed property countryState
- Added watcher for countryState
- Changed method onSaveCountryState
- Changed method onDeleteCountryStates to reset selection of country state grid after deleting items.
- Added method getCountryStateName to show country state name.
- Added method checkEmptyState to check empty state of country state grid.
- Added method mountedComponent
- Changed method getStateColumns to show state name correctly.
Changed in src/module/sw-settings-country/index.js
- Added address-handling path as a child of country detail.
- Added address-handling path as a child of country create.

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