CAL-628 Missing labels on attachment of Preview popup

Fix description: backport CAL-611 fix.
CAL-628 Missing labels on attachment of Preview popup

Fix description: i18n Close icon of image preview for task/event.
CAL-628 Missing labels on attachment of Preview popup

Fix description: Backport CAL-611 fix.
i18n Close icon of image preview for task/event.
CAL-724 Lack of UIListView.label.Title key

Fix description: i18n for key Summary and Task on List view.