An ‘unknown’ organisation can either be:
- one where we know it exists but don’t know much about it (in which
case the API returns some JSON with the info we do know)
- one we’ve never come across (in which case the API will return `None`)
This commit fixes a bug where we were trying to access the organisation
type in the latter case.
Settings looked at `domains.yml` when users were making go live requests
or email branding requests.
This will allow us to remove the `domains.yml` file, by using
information about organisations that is now stored in the database
instead.
This is the first step of replacing the `domains.yml` file.
In order to replicate the same functionality we get from the
`domains.yml` file and its associated code this commit adds a
`Organisation` model. This model copies a lot of methods from the
`AgreementInfo` class which wrapped the `domains.yml` file.
It factors out some stuff that would otherwise be duplicated between the
`Organisation` and `Service` model, in such a way that could be reused
for making other models in the future.
This commit doesn’t change other parts of the code to make use of this
new model yet – that will come in subsequent commits.
