There is no need to wait for `Statusgo.Login` callback in order to start
unlocking realm db: currently it is encrypted via a key which is derived
from user’s password, so we can try to unlock that DB before starting
node. That’s how password will be checked. Right after that `:home`
screen is shown, the node is started, then `Statusgo.Login` executed.
The difference in sign in duration is more noticeable on Android
devices, where `Statusgo.Login` is much slower because of PFS database
encryption.
* ability to edit profile data
* ability to update status (we save it internally for now)
* ability to change profile picture (from camera or gallery)
* enhanced way of storing profile-related data in realm and internal state db
Former-commit-id: 91d8ecc4bdf8407bc95b2fe703113bebccbbd885
