* Merge pull request #79 from PrivateStorageio/78.tests-in-nix-packaging
* Merge pull request #80 from PrivateStorageio/77.payment-metadata-handling
* Merge pull request #83 from PrivateStorageio/82.currency-parsing
* Merge pull request #85 from PrivateStorageio/84.currency-and-price

Add monitoring VPN modules and config

Closes privatestorageops#341

See merge request !87

... if you are reading this not in the repo, but from the web page, you might
not know where to go to make all those nice commands work.

The testing grid is missing users.nix but the local grid has it.

Disable agent forwarding

Closes #59

See merge request !98

Put the original domain first

See merge request !95

The original domain got some state created for it by certbot.  The
certificates are anchored to `payments.privatestorage.io` in the filesystem.
The code handling these domains uses the first domain name in the list to find
the certificates, so make it match the filesystem state.

Multiple domains in issuer certificate

See merge request !94

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.