Add settings table. #12

Move the first name & last name from localStorage to the IndexedDB.
Add the derivation path to the core account data, since that's important for the DB backup & restore.
Add an advanced setting to show contact give amounts (for https://gitea.anomalistdesign.com/trent_larson/kick-starter-for-time-pwa/pulls/11 )
Remove the "condition" from localStorage and check for accounts instead.
Remove unused lastView.
Remove source = ref("Hello");

When we merge this (and the other ones that change the DB), we've got to clear out and recreate the store.