Decreased z-index of bottom nav, so it doesn't overlap the sign in any more.
Removed solved TODOs.
Minor refactoring.
Needs now correctly load and show during re-login.
Faster way to determine object length: Object.keys(obj).length.
Initialising the notification counts to 0 so they correctly show up in the postbox. However they don't get saved to / fetched from the server yet, thus being lost during page-reloads.