Event list widget: Show all-day events without "all day" qualifier

[joshtriplett]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

For all-day events, I'd rather not have the extra vertical space spent on saying "All-day". I can easily tell if it's an all-day event by the lack of a start and end time.

Why do you want this feature?

Compact display, that's easier to scan without redundant information.

Additional information

No response

[joshtriplett]

This will also be clearer with the change in #142 .