fixed navbar, redirect on logout, landing page, can add pmt type, log…

[JamsDuke]

Instructions for review:

1. Git fetch
2. Swap to jd-general-bug-fixes branch
3. Verify that you can add a payment type
4. That you can add a new product.
5. Verify that app is properly redirecting you on landing and logging out.
6. Shopping cart and new product tabs in navbar should be hidden if there isnt a currently logged in user.