all statuses/accounts to assemble, but at least lists don't have to be
re-rendered all the time now. Also add "mention" dropdown option

Also fix reloading of timelines after merge-type events

entire timelines (only fetch since last known ID). Side effect: account
timelines no longer update in real-time

This prevents the bug where if you go "back" to the UI after navigating to
another page it loads with the old set of statuses

through suggestions in UI

Also upgrade react-redux to latest version. This is a performance update

Also, only update relative time every minute instead of 6 seconds. My bad