data-hook for form

Fixes #5397

Conflicts:
	backend/app/views/spree/admin/general_settings/edit.html.erb
Right no objects found message for new stock transfer
Fixes #5400
Deleted the ajax_indicator for the observe_field on change

Deleted the spinner from the states index
Fixes #5402
Added configuration_menu to the 'add country' page
Fixes #5403
Added configuration_menu to the 'stock locations edit'

Added configuration_menu to 'stock locations new'

Fixes #5404
Fixed objects name for stock location form labels
Fixes #5406

Conflicts:
	backend/app/views/spree/admin/stock_locations/_form.html.erb