Added IPTC tags with newer version with ability to select more tags to show in main section.

WebExtensions cannot access file directly, so there are two ways to determine file size. One Content-Length size and another is cached size. But local files are not cached. So Content-Length is provided by browser. In case of file protocol Content-Length is likely a real file size. So i remove this notification for file protocol.

But with web servers it's often not a real size. Many servers compressing data for transfer.