Add Social Media Tags for Preview
By link-referencing to the app the clients like Telegram are not able to generate a preview.
We should add meta-tags to the reports / broadcast / broadcastseries / ... including the picture and an preview of the first lines of the Description. By broadast(series) something the datetime / recurrent rules as human readable could be inserted to. Some examples are here: https://css-tricks.com/essential-meta-tags-social-media/