Adds a navbar for the scheduling coordinator.

[lramos15]

This adds a navigation bar item for the scheduling coordinator. It seems to work pretty well, however it seems like the navbar gets stuck when the user logs out. I think it's because the logout process isn't completing correctly and is a side effect of the issue I have open that clicking home logs the user out. This fixes #35

[ddbruce]

This looks fine. I'm confused about the logic change in index.html, so if you could explain that to me so I don't have to rack my brain, that'd be great. @lramos15

[lramos15]

Before nav bar items could be only listed as admin only and shows up for only admins. This allows nav bar items to be listed as scheduling only as well and only show for scheduling coordinator.

[ddbruce]

I understand the logic behind what you're trying to do, but I can't wrap my head around (!n.adminOnly && !isAdmin) || (!n.schedulingOnly && !isScheduling). Why does this work? I might not understand what the vars are, I guess.

[lramos15]

I believe it can also be written as (!n.adminOnly || isAdmin) || (!n.schedulingOnly || isScheduling) which might make it easier to wrap the brain around.

[lramos15]

@ddbruce you were correct the if statement logic was incorrect and is now much more.... logical.