Add Home view that shows the most important stuff to students and teachers homes

[jpaav]

This one has a lot of context specific coding. Current time is most important obviously. This page basically needs to show the most pressing stuff to the teacher/student. For teachers this is partially unapproved passes and also passes that will need to be checked in and out soon.

If you want to go above and beyond and make this page super responsive (please do) you could make it all out of javascript sorting that updates live. This way if the teacher/student leaves the page open it will automatically make the most important stuff show up on the home page and hide the unimportant stuff. We already pass all the Pass objects into the template so its not too big of a deal to implement.