Date column misleading

[sj14]

Thanks for the project and the time invested!

The date column seems to be misleading to me. I guess this is the date when an entry was first scraped. This is a problem when you try to find the newest available entries in the Mediathek and an entry was already available a year ago but was unavailable some time in between and then available again (e.g. republished after a year). This is also not optimal for the RSS feed, as the new releases of the entries are not shown as new entries in the feed and rather use the old dates too.