Allow users to replace the title on the calendar

[stevejburge]

"It's currently showing the post Title in the calendar view, but there are a few limitations with that approach. First, a reporter doesn't necessarily know what the title is when they are creating a post for a few days or a week ahead of time. They only know that they will be writing about a specific topic. Secondly, the title can change multiple times as a story develops. That'd make it hard for an editor to see which story they are dealing with if the label on the calendar keeps changing. Lastly, titles can be rather long, and a tight naming convention would sit much more neatly with the calendar block. At this point, I'd like to have Story Name (I changed it from Assignment) be the field listed in the calendar. Is that possible?"