Calendar: Sort Events by start DateTime

[alec3660]

This PR allows Calendar to display Events in chronological order.

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[AtkinsSJ]

First, thanks for fixing this!

Second, I'm assuming you didn't know, but we do have a quick_sort() implementation. I don't know if you're doing something really clever that I don't understand, but otherwise, using quick_sort() would be clearer.

[alec3660]

First, thanks for fixing this!

Second, I'm assuming you didn't know, but we do have a quick_sort() implementation. I don't know if you're doing something really clever that I don't understand, but otherwise, using quick_sort() would be clearer.

I was aware of the quick_sort() implementation but I wasn't sure if it was compatible with some other features that I am working on. It turns out I was overthinking things and it works great, thanks!