Page breaks if localStorage is disabled

[xaur]

If I visit https://timestamp.decred.org with JS disabled, it shows some UI. If I enable JS but not enable localStorage, the page crashes with localStorage is null error and shows nothing. If I enable localStorage and cookies, the app shows properly.

There are two issues to consider here:

1. The page should not crash and go blank if localStorage is unavailable
2. localStorage may not be needed at all for this app to work