Improves Trash Dialog

Button titles simplified and made more recognizable. See #541 no 3.

src/dialogs.js

@@ -205,10 +205,10 @@ export async function cleanupFilesDialog() {
     input: 'radio',
     inputValue: 'all',
     text: i18n.t('Do you want to move the original file and/or any generated files to trash?'),
-    confirmButtonText: i18n.t('Trash selected file(s)'),
+    confirmButtonText: i18n.t('Trash'),
     confirmButtonColor: '#d33',
     showCancelButton: true,
-    cancelButtonText: i18n.t('Do not delete'),
+    cancelButtonText: i18n.t('Cancel'),
     focusCancel: true,
     customClass: { input: 'swal2-losslesscut-radio' },
     inputOptions: {