Present available hosts time blocks

[jwills-r8]

As a hiring manager
I want neverl8 to present meetings no early than 1 day in advance of the time a person is selecting a meeting
I want it to present all available options from all hosts minus the the last host to conduct a meeting
So that we can shorten the time to hiring a new candidate.

Given a user is selecting a meeting
when a user selects a day
then neverl8 will show all available time slots from all available hosts

[drewfugate]

The logic for this ticket is built out and tested by mocking the calendar events. Once we get to #18 and #19, full functionality should be fairly simple to implement.