[Orgmode] Minor bug in time grid view in agenda buffer

[Jose Robins]

Bug Description
Let's say I have a scheduled entry which I've scheduled for today with the time of 7:15-8:30 am (using a time string on the item) and I have another entry for 8:30 am to 10:00am. Now I have set it up such that the default times to be shown are whatever is set by default. I also have set it such that if an entry exists for a particular time, no empty grid line should be shown. However, 8:00-8:30 still shows in the gridline view (as an empty line) even though an entry exists from 7:15 - 8:30 am. However, if I make it from 8:00 to 8:30 am, the empty grid line entry disappears.

Question/Wish Item
Also is there a way to allow for times after 12:00 pm to be shown in am/pm format instead of 24 hour clock in the time grid view?

Thanks,
Jose