Feature/create wallet

[Sankara-Jefferson]

@zachfedor “Continues work from #496 after history cleanup”

# This will implement any missing migrations after user updates to new version
$ singularity admin init

# These will allow a user/dev to traverse through migrations for troubleshooting
$ singularity admin migrate up
$ singularity admin migrate down
$ singularity admin migrate to <migration_id>

# And this will print the current migration ID
$ singularity admin migrate which

Partially completes #469