Add symlink to secrets

Closes #65

See merge request !93

The default case was actually catastrophically bad for any actual deployment
since it would just lock everyone out of all the systems.

More flexibility and less dots in config files.
Implements #65.

Add new private.storage domain to allowed charge origins

See merge request !90

We might want to merge this before turning on live payment.

Related to privatestorageops#333.

Get the local dev env running: Add keys

See merge request !83

Secure key storage

Closes privatestorageops#193

See merge request !86

Add local development network morph/nix configuration

See merge request !82

Fix (make-)issuer.nix file name inconsistency

See merge request !84

Discern make-issuer.nix from issuer.nix better.

Update branch by merging @jcalderone's feedback on local-dev-env-2.

Add local development network Vagrantfile and Documentation

See merge request !81

... if other hypervisors are installed as well.

Co-Authored-By: Jean-Paul Calderone <jean-paul@privatestorage.io>