[feature request] separate event title prefix for ICS

Hi there,

I have set up a gancio instance (https://dresden.beer). I like it a lot. 😄

Unfortunately the title is used as a prefix for the ICS feed. That means if I choose a relatively long title for the site I can't read what the events are about in my calendar because [Dresden Beer Friends] takes all the space 😀

It would be nice if I could define another prefix for the feed or turn it of completely.

Thanks