Fix theme activation if old events of wpcalendar are present (#604)

Author: albig

functions/activation.php

@@ -76,8 +76,8 @@ function sunflower_import_events() {
 		update_post_meta( $id, '_sunflower_event_organizer', $meta['_veranstalter'][0] );
 		update_post_meta( $id, '_sunflower_event_organizer_url', $meta['_veranstalterlnk'][0] );
 
-		update_post_meta( $id, '_sunflower_event_from', germanDate2intDate( $meta['_wpcal_from'][0] ) );
-		update_post_meta( $id, '_sunflower_event_until', germanDate2intDate( $meta['_bis'][0] ) );
+		update_post_meta( $id, '_sunflower_event_from', sunflower_german_date2int_date( $meta['_wpcal_from'][0] ) );
+		update_post_meta( $id, '_sunflower_event_until', sunflower_german_date2int_date( $meta['_bis'][0] ) );
 
 		if ( $meta['_thumbnail_id'][0] ) {
 			update_post_meta( $id, '_thumbnail_id', $meta['_thumbnail_id'][0] );