Refactor state management.

[itsMarcoSolis]

We need to refactor the state management system to properly implement Redux across the whole application.

Details and Assumptions

• Current state management logic is implemented at src/state.
• Must implement Redux to store state
• Must implement reducers to manage state.
• Must use redux-state-sync to sync state between tabs ONLY when applicable. (e.g. share orbitdb or ipfs state)
• Must use redux-persist or redux-localstorage-simple (TBD) to persist state when applicable.