perf: remove initial sync (closes #42)

chore: update license information

refactor: remove react import (react v17)

fix: make wallet categories better (fixes #7)

feat: near completion with v1 backup importing

refactor: split up Wallet.ts

feat: more backup import progress

refactor: import aliases

feat: name page

refactor: extract tx summary, fix redux, new hook

feat: search results nav, keyboard shortcut ...

Also implements half of the address page, adds a hook for the syncNode,
and some other miscellaneous refactors.

refactor: remove most unnecessary redux hooks

fix: optimise throttle and hooks ...

In the process of fixing some hook dependencies, I introduced a bug
which caused the application to rapidly send requests to the Krist
server (luckily I was using a local Krist instance). To raise awareness
of this if it happens again in the future, I added a notification that
appears whenever the rate limit is hit. Ideally, it should never appear
in production.

chore: update file headers

fix: sync node in redux

feat: sync balances with websocket

feat: show existing wallet categories

feat: mostly finish wallet dialogs