Calendars often only show the event summaries in the overview, so to figure out
which cities to stay away from it's useful to display the game locations there.
The LOCATION field itself has been retained even though it is now redundant,
just in case any calendar apps out there can do sth useful with it.
This change was performed using
```
sed -i 's/^SUMMARY/DESCRIPTION/;/^LOCATION/{p;s/[^:]*/SUMMARY/}' nogo2024.ics
```
