Move unknown organisation logic into Jinja

Human readable content like this doesn’t really belong in the model
layer, it’s more natural to have it in the presentation layer.

app/formatters.py

@@ -520,5 +520,7 @@ def format_billions(count):
     return humanize.intword(count)
 
 
-def format_yes_no(value):
+def format_yes_no(value, yes='Yes', no='No', none='No'):
-    return 'Yes' if value else 'No'
+    if value is None:
+        return none
+    return yes if value else no

app/models/organisation.py

@@ -101,21 +101,6 @@ class Organisation(JSONModel):
             self.request_to_go_live_notes = None
             self.email_branding_id = None
 
-    @property
-    def as_agreement_statement_for_go_live_request(self):
-        return '{} (organisation is {}, {}).'.format(
-            {
-                False: 'No',
-                None: 'Can’t tell',
-            }.get(self.agreement_signed),
-            self.name,
-            {
-                True: 'a crown body',
-                False: 'a non-crown body',
-                None: 'crown status unknown',
-            }.get(self.crown),
-        )
-
     def as_info_for_branding_request(self, fallback_domain):
         return self.name or 'Can’t tell (domain is {})'.format(fallback_domain)
 

app/templates/go-live-request.txt

@@ -5,7 +5,7 @@ Service: {{ current_service.name }}
 Organisation type: {{ current_service.organisation_type_label }}
 Agreement signed:
 {%- if current_service.organisation.agreement_signed %} Yes, on behalf of {{ current_service.organisation.name }}.
-{%- elif current_service.organisation.name %} {{ current_service.organisation.as_agreement_statement_for_go_live_request }}
+{%- elif current_service.organisation.name %} {{ current_service.organisation.agreement_signed|format_yes_no(none='Can’t tell') }} (organisation is {{ current_service.organisation.name }}, {{ current_service.organisation.crown|format_yes_no(yes='a crown body', no='a non-crown body', none='crown status unknown') }}).
 {%- else %} Can’t tell (domain is {{ current_user.email_domain }}).
 {%- endif %}
 {%- if current_service.organisation.request_to_go_live_notes %} {{ current_service.organisation.request_to_go_live_notes }}{% endif %}