Add indicator for events with description

[maxpatiiuk]

Google Calendar does not show previews of descriptions for events that have descriptions nor does it provide an indicator that even has a description.

As a result, it's easy to add some important details about the event into the description and forget that it's there.

Some sort of indicator would be wonderful (i.e, a red corner or a stripe)

The difficulty is that there is no indication in the DOM that an element has an event, thus we would have to make network requests to get this information. And there would have to be a separate network request for each calendar. And if user is rapidly moving though calendars, that's a lot of network requests...

[maxpatiiuk]

Thus far my solution has been to prepend event names with a . for events that contain a description - then when I see event name starting with ".", I am reminded that there is a description.
But, this changes the data, so I have to integrate tools (like #232 to support this pattern)
And you can sometimes forget to do this
And this is not standartilized