Store `document.location.hash` in LocalStorage
Store `document.location.hash` in LocalStorage

So that we can implement retrieval of the original
`document.location.hash` from the LocalStorage after the user has left
the site.

Signed-off-by: Pang Yan Han <22594c345857f664c61cd411f607c4d40a9d4af9@gmail.com>

yanhan/cljs-nusmods,yanhan/cljs-nusmods,yanhan/cljs-nusmods