Clarify UI when time is logged versus completed for meeting cards

Now that we can log time for meeting cards, I was unsure if the 2:00 / 2:00 time display per day should be updated.

For a day w/ two 1-hour meetings, and no cards, it is displaying 2:00 / 2:00  (two hours time used and two hours estimated). For standard cards, the "time used" section would only be incremented when time is logged against the card.