implementing auto-login

the auto-login makes this work much nicer when installed on an android
device
Notify user if disconnected from firebase

Offline changes can be lost if user refreshes browser, or closes app, so
it's best to notify them if they are offline... this is just some prep
work for storing changes locally and syncing changes that would be lost
otherwise -- well, I may do that, not sure yet.
reverting css to resolve conflict
Merge branch 'dev'
adding css for connection status icon
Merge branch 'dev'