getPreviewButton() does not write preview-button-data twice
tree5cfb8209695846b01fa196f393dfb96781503ee0
-rw-r--r-- 310 .gitignore
drwxr-xr-x - backend
drwxr-xr-x - database
drwxr-xr-x - irreco-metapack
drwxr-xr-x - irreco
drwxr-xr-x - irtrans
drwxr-xr-x - script
drwxr-xr-x - themes